CN110256312A - 一种烯基偕二氟亚甲基化合物及其制备方法 - Google Patents
一种烯基偕二氟亚甲基化合物及其制备方法 Download PDFInfo
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- -1 difluoro methylene compound Chemical class 0.000 title claims abstract description 41
- 125000003342 alkenyl group Chemical group 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000002904 solvent Substances 0.000 claims abstract description 21
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims abstract description 18
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 claims abstract description 14
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical class ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 claims abstract description 9
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims abstract description 9
- SYBXSZMNKDOUCA-UHFFFAOYSA-J rhodium(2+);tetraacetate Chemical compound [Rh+2].[Rh+2].CC([O-])=O.CC([O-])=O.CC([O-])=O.CC([O-])=O SYBXSZMNKDOUCA-UHFFFAOYSA-J 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- WIKQEUJFZPCFNJ-UHFFFAOYSA-N carbonic acid;silver Chemical compound [Ag].[Ag].OC(O)=O WIKQEUJFZPCFNJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- LKZMBDSASOBTPN-UHFFFAOYSA-L silver carbonate Substances [Ag].[O-]C([O-])=O LKZMBDSASOBTPN-UHFFFAOYSA-L 0.000 claims abstract description 6
- KQTXIZHBFFWWFW-UHFFFAOYSA-L silver(I) carbonate Inorganic materials [Ag]OC(=O)O[Ag] KQTXIZHBFFWWFW-UHFFFAOYSA-L 0.000 claims abstract description 6
- 150000001989 diazonium salts Chemical class 0.000 claims abstract description 5
- UBJVUCKUDDKUJF-UHFFFAOYSA-N Diallyl sulfide Natural products C=CCSCC=C UBJVUCKUDDKUJF-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000006555 catalytic reaction Methods 0.000 claims abstract 2
- 239000011261 inert gas Substances 0.000 claims abstract 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 56
- 239000000047 product Substances 0.000 claims description 52
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 42
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 22
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 18
- 238000004440 column chromatography Methods 0.000 claims description 18
- 239000012043 crude product Substances 0.000 claims description 18
- 239000003208 petroleum Substances 0.000 claims description 18
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 15
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 11
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 150000005224 alkoxybenzenes Chemical class 0.000 claims description 9
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 9
- 125000000623 heterocyclic group Chemical group 0.000 claims description 9
- 125000003545 alkoxy group Chemical group 0.000 claims description 6
- 125000004417 unsaturated alkyl group Chemical group 0.000 claims description 5
- 229910002666 PdCl2 Inorganic materials 0.000 claims description 4
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 claims description 4
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 125000004185 ester group Chemical group 0.000 claims description 3
- 125000000304 alkynyl group Chemical group 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 125000001072 heteroaryl group Chemical group 0.000 claims description 2
- 239000012046 mixed solvent Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 abstract description 20
- 230000015572 biosynthetic process Effects 0.000 abstract description 18
- 239000003814 drug Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- LTVOKYUPTHZZQH-UHFFFAOYSA-N difluoromethane Chemical group F[C]F LTVOKYUPTHZZQH-UHFFFAOYSA-N 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 5
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 abstract description 4
- 229940079593 drug Drugs 0.000 abstract description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000857 drug effect Effects 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 150000003568 thioethers Chemical class 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract 1
- WGFOBBZOWHGYQH-MXHNKVEKSA-N lubiprostone Chemical compound O1[C@](C(F)(F)CCCC)(O)CC[C@@H]2[C@@H](CCCCCCC(O)=O)C(=O)C[C@H]21 WGFOBBZOWHGYQH-MXHNKVEKSA-N 0.000 abstract 1
- 229960000345 lubiprostone Drugs 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- WSNODXPBBALQOF-VEJSHDCNSA-N tafluprost Chemical compound CC(C)OC(=O)CCC\C=C/C[C@H]1[C@@H](O)C[C@@H](O)[C@@H]1\C=C\C(F)(F)COC1=CC=CC=C1 WSNODXPBBALQOF-VEJSHDCNSA-N 0.000 abstract 1
- 229960004458 tafluprost Drugs 0.000 abstract 1
- 229910052723 transition metal Inorganic materials 0.000 abstract 1
- 150000003624 transition metals Chemical class 0.000 abstract 1
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 96
- YTKHATNFOMQGFZ-UHFFFAOYSA-N Obtusilic acid Natural products CC1C(CCC2(C)CCC3(COC(=O)C=C/c4ccc(O)cc4)C(=CCC5C6(C)CCC(O)C(C)(C)C6CCC35C)C12)C(=O)O YTKHATNFOMQGFZ-UHFFFAOYSA-N 0.000 description 30
- 239000002585 base Substances 0.000 description 23
- 229930015698 phenylpropene Natural products 0.000 description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 17
- 239000000203 mixture Substances 0.000 description 17
- 239000000741 silica gel Substances 0.000 description 17
- 229910002027 silica gel Inorganic materials 0.000 description 17
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 16
- 238000004293 19F NMR spectroscopy Methods 0.000 description 16
- 238000005160 1H NMR spectroscopy Methods 0.000 description 16
- 238000001228 spectrum Methods 0.000 description 16
- 229910052731 fluorine Inorganic materials 0.000 description 9
- 239000011737 fluorine Substances 0.000 description 6
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 4
- 125000001153 fluoro group Chemical group F* 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- ULDRXFWCPXYAAE-UHFFFAOYSA-N 2-diazonio-1-[(2-methylpropan-2-yl)oxy]-2-phenylethenolate Chemical compound CC(C)(C)OC(=O)C(=[N+]=[N-])C1=CC=CC=C1 ULDRXFWCPXYAAE-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 2
- 238000006880 cross-coupling reaction Methods 0.000 description 2
- 125000003709 fluoroalkyl group Chemical group 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- PQIOSYKVBBWRRI-UHFFFAOYSA-N methylphosphonyl difluoride Chemical group CP(F)(F)=O PQIOSYKVBBWRRI-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 125000004646 sulfenyl group Chemical group S(*)* 0.000 description 2
- SCVJRXQHFJXZFZ-KVQBGUIXSA-N 2-amino-9-[(2r,4s,5r)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-3h-purine-6-thione Chemical compound C1=2NC(N)=NC(=S)C=2N=CN1[C@H]1C[C@H](O)[C@@H](CO)O1 SCVJRXQHFJXZFZ-KVQBGUIXSA-N 0.000 description 1
- JEYCPFDCZQPYBL-UHFFFAOYSA-N 2-diazo-2-phenylacetic acid Chemical compound OC(=O)C(=[N+]=[N-])C1=CC=CC=C1 JEYCPFDCZQPYBL-UHFFFAOYSA-N 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- QARVLSVVCXYDNA-UHFFFAOYSA-N bromobenzene Chemical compound BrC1=CC=CC=C1 QARVLSVVCXYDNA-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- LTYMSROWYAPPGB-UHFFFAOYSA-N diphenyl sulfide Chemical compound C=1C=CC=CC=1SC1=CC=CC=C1 LTYMSROWYAPPGB-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 238000006772 olefination reaction Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000006462 rearrangement reaction Methods 0.000 description 1
- 229910000108 silver(I,III) oxide Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C321/00—Thiols, sulfides, hydropolysulfides or polysulfides
- C07C321/12—Sulfides, hydropolysulfides, or polysulfides having thio groups bound to acyclic carbon atoms
- C07C321/18—Sulfides, hydropolysulfides, or polysulfides having thio groups bound to acyclic carbon atoms of an acyclic unsaturated carbon skeleton
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C321/00—Thiols, sulfides, hydropolysulfides or polysulfides
- C07C321/24—Thiols, sulfides, hydropolysulfides, or polysulfides having thio groups bound to carbon atoms of six-membered aromatic rings
- C07C321/28—Sulfides, hydropolysulfides, or polysulfides having thio groups bound to carbon atoms of six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
- C07D333/24—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
本发明公开一种烯基偕二氟亚甲基化合物及其制备方法,属于医药中间体及有机合成技术领域。本发明以3,3‑二氟烯丙基硫醚和重氮化合物为原料,在CuI、Rh2(OAc)4、Ag2CO3、Ru(PPh3)3Cl等过渡金属的催化下,于乙腈(MeCN)、1,2‑二氯乙烷(DCE)、二氯甲烷(DCM)、四氢呋喃(THF)、水(H2O)等溶剂中及惰性气体(N2气)氛围下生成烯基偕二氟亚甲基化合物;所合成的化合物同时含有烯丙基、硫醚和偕二氟亚甲基结构单元,其中的烯丙基与硫醚结构单元可进行多种转化,而偕二氟亚甲基具有重要药效意义,广泛存在于如Tafluprost、Lubiprostone等药物中,本发明亦可为药物分子的合成与修饰提供一种新目标和新方法。
Description
技术领域
本发明涉及一种烯基偕二氟亚甲基化合物及其制备方法,属于医药中间体及有机合成技术领域。
背景技术
在有机分子中引入氟原子,往往能改善化合物的脂溶性及生物活性。迄今为止,有20%的有机药物分子、30%的农用有机物中含有氟原子。同时,二氟亚甲基(CF2)是一种非常有趣的含氟结构单元,被广泛用于医药、农药和功能材料等领域。
在各种偕二氟亚甲基基团中,烯基偕二氟亚甲基(CF2CH = CH2)由于其碳碳双键的多功能性和能进一步的转化,具有较高的潜在应用价值,是一种重要的含氟片段。然而,获得这种结构的合成方法非常有限,主要集中在基于卤化物的交叉偶联的开发方法上和自由基策略,即通过偕二氟烷基构建乙烯基C(sp2)-CF2键的烯烃的偕二氟烷基化。而通过直接的偕二氟化合物合成的高效方法很少,仅限于3,3-二氟烯丙基硼酸酯的醛、酮或酰亚胺的亲核性偕二氟化烯化反应,这些反应均是由三氟甲基取代的烯烃通过金属催化的偶联反应得到。此外,也有研究人员通过Pd催化的交叉偶联反应,实现了高度区域选择性的有机硼化物的偕二氟甲化反应。尽管取得了所有这些成就,但是开发一种直接掺入偕二氟烯丙基以构建易于转化的化合物的方法,仍然是非常需要的并且是具有挑战性的任务。本发明提供一种直接往重氮化合物中引入烯基偕二氟亚甲基的方法以构建易于转化的烯基偕二氟亚甲基化合物。
发明内容
本发明的目的在于提供一种烯基偕二氟亚甲基化合物的制备,其结构式为:
其中,R1选自烷基、环烷基、苯基、苄基、烷基苯、烷氧基苯、卤代苯基、多环芳基、杂环基。R2选自烷基、烷氧基、环烷基、苯基、烷基苯、烷氧基苯、卤代苯基、多环芳基或杂环基以及其他不饱和烃基。R3、R4选自烷基、烷氧基、环烷基、苯基、烷基苯、烷氧基苯、卤代苯基、多环芳基、酯基、杂环基或醚基以及其他烃基。
优选的,本发明所述不饱和烃基为芳基、烯基、杂芳基或炔基。
本发明的另一目的在于提供所述烯基偕二氟亚甲基化合物的制备方法,具体包括以下步骤:
(1)依次在惰性氛围下将3,3-二氟烯丙基硫醚、重氮化合物、催化剂、溶剂按摩尔比为1:(1~3):(0.005~0.02):(10~100)的比例加入到反应器中,在室温下反应10分钟-2小时即生成混合产物。
(2)通过减压浓缩得粗产品,再用乙酸乙酯、石油醚混合溶剂为淋洗液进行柱层析(300-400目硅胶)分离提纯即得烯基偕二氟亚甲基化合物产品。
优选的,本发明所述催化剂为Ag2CO3、Pd2(dba)3、Rh2(OAc)4、CuI、Ru(PPh3)3Cl、PdCl2、Ag2O中的一种。
优选的,本发明所述溶剂为二甲基亚砜(DMSO)、甲苯(PhMe)、乙腈(MeCN)、1,2-二氯乙烷(DCE)、二氯甲烷(DCM)、N,N-二甲基甲酰胺(DMF)、四氢呋喃(THF)、水(H2O)中的一种。
本发明所述3,3-二氟烯丙基硫醚化合物的通式如下:;所述重氮化合物通式如下:;其中,R1选自烷基、环烷基、苯基、苄基、烷基苯、烷氧基苯、卤代苯基、多环芳基、杂环基;R2选自烷基、烷氧基、环烷基、苯基、烷基苯、烷氧基苯、卤代苯基、多环芳基、杂环基或卤素以及其他不饱和烃基;R3、R4选自烷基、烷氧基、环烷基、苯基、烷基苯、烷氧基苯、卤代苯基、多环芳基、酯基、杂环基、醚基或卤素以及其他烃基。
本发明的有益效果为:本发明所述方法以易得的3,3-二氟烯丙基硫醚化合物和重氮化合物为起始原料,通过[2,3]-σ重排反应高效地获得烯基偕二氟亚甲基化合物,所合成的化合物同时含有烯丙基、硫醚和二氟结构单元,其中的烯丙基与硫醚结构单元可进行多种转化,而氟原子具有重要药效意义,亦为药物的合成与修饰提供一种新方法和新目标。
具体实施方式
下面结合实施例对本发明作进一步详细说明,但本发明保护范围不局限于所述内容。
实施例1
4-溴-3,3-二氟-2-苯基-2-苯硫基戊-4-烯酸甲酯(3a)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基苯基硫醚(1a)、2-二氮杂-2-苯基乙酸甲酯(2a)、Rh2(OAc)4、1,2-二氯乙烷(DCE)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1 mmol2-溴-3,3-二氟烯丙基苯基硫醚、1.2 mmol 2-二氮杂-2-苯基乙酸甲酯、0.01 mmol Rh2(OAc)4、10 mmol 1,2-二氯乙烷(DCE)加入到反应器中,在室温下反应10分钟。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:20(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得355 mg产品4-溴-3,3-二氟-2-苯基-2-苯硫基戊-4-烯酸甲酯3a,收率为86%,反应方程式如下:
产物核磁共振谱表征数据如下:1H NMR (600 MHz, CDCl3) δ 7.24 (d, J = 7.7 Hz,1H), 7.22 – 7.15 (m, 1H), 7.08 – 7.01 (m, 2H), 6.97 (t, J = 7.7 Hz, 1H), 5.77(s, 1H), 5.62 (d, J = 2.3 Hz, 1H), 3.24 (s, 2H); 13C NMR (151 MHz, CDCl3) δ167.26, 137.31, 134.42, 130.04, 130.01, 129.86, 128.74, 128.62, 127.95,127.13 (t, J = 5.9 Hz), 122.78 (t, J = 32.4 Hz), 118.20 (dd, J = 260.6, 258.0Hz), 70.20 (t, J = 25.1 Hz), 52.53; 19F NMR (471 MHz, CDCl3) δ -89.51 (d, J =244.8 Hz, 1F), -90.69 (d, J = 244.8 Hz, 1F)。
实施例2
4-溴-3,3-二氟-2-苯硫基-2-对甲苯基戊-4-烯酸甲酯(3b)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基苯硫醚(1a)、2-二氮杂-2-对甲苯基乙酸甲酯(2b)、Pd2(dba)3、二氯甲烷(DCM)的摩尔比为1:1:0.005:50的比例,依次在N2氛围下将1 mmol 2-溴-3,3-二氟烯丙基苯硫醚、1.2 mmol 2-二氮杂-2-对甲苯基乙酸甲酯、0.01 mmol Pd2(dba)3、10 mmol 二氯甲烷(DCM)加入到反应器中,在室温下反应1小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:20(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得333mg产品4-溴-3,3-二氟-2-苯硫基-2-对甲苯基戊-4-烯酸甲酯3b,收率为78%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 7.51 (d, J = 7.5 Hz,2H), 7.37 – 7.31 (m, 3H), 7.25 (dd, J = 10.7, 4.4 Hz, 2H), 7.12 (d, J = 8.2Hz, 2H), 6.00 (d, J = 2.3 Hz, 1H), 5.88 (d, J = 2.4 Hz, 1H), 3.50 (s, 3H),2.33 (s, 3H); 13C NMR (151 MHz, CDCl3) δ 167.49, 138.81, 137.37, 131.49,130.29, 130.07, 129.79, 128.74, 128.69, 127.13 (t, J = 5.9 Hz), 122.98 (t, J= 32.4 Hz), 118.30 (dd, J = 260.4, 257.8 Hz), 70.05 (t, J = 25.2 Hz), 52.57,21.24; 19F NMR (471 MHz, CDCl3) δ -89.51 (d, J = 244.8 Hz, 1F), -90.69 (d, J =244.8 Hz, 1F)。
实施例3
4-溴-3,3-二氟-2-苯基-2-苯硫基戊-4-烯酸乙酯(3c)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基苯硫醚(1a)、2-二氮杂-2-苯基乙酸乙酯(2c)、Ag2CO3、甲苯(PhMe)的摩尔比为1:3:0.02:100的比例,依次在N2氛围下将1 mmol 2-溴-3,3-二氟烯丙基苯硫醚、1.2 mmol 2-二氮杂-2-苯基乙酸乙酯、0.01 mmol Ag2CO3、10 mmol甲苯(PhMe)加入到反应器中,在室温下反应2小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:20(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得362 mg产品4-溴-3,3-二氟-2-苯基-2-苯硫基戊-4-烯酸乙酯3c,收率为85%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 7.54 – 7.46 (m, 4H),7.36 – 7.30 (m, 4H), 7.27 – 7.23 (m, 2H), 6.06 (d, J = 2.3 Hz, 1H), 5.91 (d,J = 2.4 Hz, 1H), 4.03 (ddd, J = 14.3, 9.0, 5.4 Hz, 1H), 3.99 – 3.92 (m, 1H),1.12 (t, J = 7.2 Hz, 3H); 13C NMR (151 MHz, CDCl3) δ 167.02, 137.25, 134.70,130.35, 130.05, 129.95, 128.72, 128.63, 127.95, 127.07 (t, J = 5.9 Hz),123.07 (t, J = 32.4 Hz), 118.28 (dd, J = 260.5, 257.9 Hz), 70.12 (t, J = 25.1Hz), 62.23, 13.76; 19F NMR (471 MHz, CDCl3) δ -89.03 (d, J = 245.6 Hz, 1F), -90.44 (d, J = 245.5 Hz, 1F)。
实施例4
4-溴-3,3-二氟-2-苯基-2-苯硫基戊-4-烯酸叔丁酯(3d)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基苯硫醚(1a)、2-重氮基-2-苯基乙酸叔丁酯(2d)、Ru(PPh3)3Cl、N,N-二甲基甲酰胺(DMF)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1mmol 2-溴-3,3-二氟烯丙基苯硫醚、1.2 mmol 2-重氮基-2-苯基乙酸叔丁酯、0.01 mmolRu(PPh3)3Cl、10 mmol N,N-二甲基甲酰胺(DMF)加入到反应器中,在室温下反应0.5小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:10(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得382 mg产品4-溴-3,3-二氟-2-苯基-2-苯硫基戊-4-烯酸叔丁酯3d,收率为84%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 7.52 (dd, J = 6.3,3.0 Hz, 2H), 7.49 – 7.44 (m, 2H), 7.34 – 7.26 (m, 4H), 7.20 (dd, J = 10.6,4.7 Hz, 2H), 6.07 (d, J = 2.4 Hz, 1H), 5.89 (d, J = 2.5 Hz, 1H), 1.28 (s,9H); 13C NMR (151 MHz, CDCl3) δ 165.82, 136.52, 135.21, 130.86, 130.00,129.28, 128.45, 128.33, 127.70, 126.59 (t, J = 6.1 Hz), 123.46 (t, J = 32.4Hz), 118.18 (t, J = 258.8 Hz), 83.85, 70.10 (t, J = 24.7 Hz), 27.60; 19F NMR(471 MHz, CDCl3) δ -87.48 (d, J = 248.5 Hz, 1F), -89.68 (d, J = 248.4 Hz,1F)。
实施例5
3-苯基丙-2-炔-1-基4-溴-3,3-二氟-2-苯基-2-苯硫基戊-4-烯酸酯(3e)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基苯硫醚(1a)、3-苯基丙-2-炔-1-基2-重氮基-2-苯基乙酸酯(2e)、CuI、二甲基亚砜(DMSO)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1mmol 2-溴-3,3-二氟烯丙基苯硫醚、1.2 mmol 3-苯基丙-2-炔-1-基2-重氮基-2-苯基乙酸酯、0.01 mmol CuI、10 mmol二甲基亚砜(DMSO)加入到反应器中,在室温下反应2小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以纯石油醚为淋洗液进行柱层析(300-400目硅胶)提纯即得379 mg产品3-苯基丙-2-炔-1-基4-溴-3,3-二氟-2-苯基-2-苯硫基戊-4-烯酸酯3e,收率为74%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 7.60 (d, J = 7.4 Hz,2H), 7.56 – 7.51 (m, 2H), 7.45 – 7.41 (m, 2H), 7.38 – 7.31 (m, 7H), 7.27 –7.23 (m, 2H), 6.10 (d, J = 2.3 Hz, 1H), 5.92 (d, J = 2.5 Hz, 1H), 4.78 (q, J= 15.4 Hz, 2H); 13C NMR (151 MHz, CDCl3) δ 166.34, 137.51, 134.19, 131.97,130.19, 130.01, 129.97, 129.03, 128.91, 128.77, 128.48, 128.07, 127.31 (t, J= 5.9 Hz), 122.82 (t, J = 32.3 Hz), 122.13, 118.18 (dd, J = 260.8, 258.0 Hz),87.30, 82.08, 69.98 (t, J = 25.2 Hz), 54.02; 19F NMR (471 MHz, CDCl3) δ -89.45(d, J = 245.5 Hz, 1F), -90.46 (d, J = 245.4 Hz, 1F)。
实施例6
4-溴-2-溴-2-苯基-3,3-二氟-2-苯硫基戊-4-烯酸甲酯(3f)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基苯硫醚(1a)、2-溴苯-2-基-2-重氮乙酸甲酯(2f)、Rh2(OAc)4、二氯甲烷(DCM)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1 mmol 2-溴-3,3-二氟烯丙基苯硫醚、1.2 mmol 2-溴-2-苯基-2-重氮乙酸甲酯、0.01 mmol Rh2(OAc)4、10 mmol二氯甲烷(DCM)加入到反应器中,在室温下反应20分钟。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:50(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得418 mg产品4-溴-2-溴-2-苯基-3,3-二氟-2-苯硫基戊-4-烯酸甲酯3f,收率为82%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 7.60 (d, J = 8.9 Hz,1H), 7.50 – 6.82 (m, 8H), 6.54 (s, 1H), 6.15 (s, 1H), 3.67 (s, 3H); 13C NMR(151 MHz, CDCl3) δ 166.83, 137.86, 135.02, 133.91, 132.51, 130.04, 129.95,129.76, 128.49, 128.36, 126.83, 125.02, 122.51 (t, J = 31.9 Hz), 118.68 (t, J= 267.1 Hz), 66.72, 53.33; 19F NMR (471 MHz, CDCl3) δ -86.13 – -87.45 (m, 1F),-87.98 – -89.45 (m, 1F)。
实施例7
4-溴-3,3-二氟-2-苯硫基-2-噻吩基戊-4-烯酸甲酯(3g)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基苯硫醚(1a)、2-二氮杂-2-噻吩基乙酸甲酯(2g)、Rh2(OAc)4、乙腈(MeCN)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1 mmol 2-溴-3,3-二氟烯丙基苯硫醚、1.2 mmol 2-二氮杂-2-噻吩基乙酸甲酯、0.01 mmol Rh2(OAc)4、10mmol乙腈(MeCN)加入到反应器中,在室温下反应0.5小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:30(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得318 mg产品4-溴-3,3-二氟-2-苯硫基-2-噻吩基戊-4-烯酸甲酯3g,收率为76%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 7.45 (s, 1H), 7.42 –7.38 (m, 2H), 7.33 (t, J = 7.4 Hz, 1H), 7.26 – 7.21 (m, 3H), 7.19 – 7.16 (m,1H), 6.10 (s, 1H), 5.92 (s, 1H), 3.61 (s, 3H); 13C NMR (151 MHz, CDCl3) δ167.21, 136.91, 134.29, 130.20, 129.96, 129.40, 128.66, 126.46 (t, J = 6.0Hz), 127.18, 124.88, 122.62 (t, J = 32.1 Hz), 117.87 (dd, J = 259.5, 258.5Hz), 67.25 (t, J = 25.9 Hz), 52.99; 19F NMR (471 MHz, CDCl3) δ -89.83 (d, J =245.6 Hz, 1F), -91.30 (d, J = 245.6 Hz, 1F)。
实施例8
4-溴-3,3-二氟-2-萘基-2-苯硫基戊-4-烯酸甲酯(3h)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基苯硫醚(1a)、2-二氮杂-2-萘基乙酸甲酯(2h)、Rh2(OAc)4、四氢呋喃(THF)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1 mmol 2-溴-3,3-二氟烯丙基苯硫醚、1.2 mmol 2-二氮杂-2-萘基乙酸甲酯、0.01 mmol Rh2(OAc)4、10mmol四氢呋喃(THF)加入到反应器中,在室温下反应0.5小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:100(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得347 mg产品4-溴-3,3-二氟-2-萘基-2-苯硫基戊-4-烯酸甲酯3h,收率为75%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 8.07 (d, J = 6.4 Hz,1H), 7.86 – 7.83 (m, 1H), 7.80 (d, J = 8.0 Hz, 2H), 7.51 – 7.44 (m, 2H), 7.34(d, J = 6.9 Hz, 1H), 7.30 – 7.17 (m, 3H), 7.10 (s, 2H), 6.44 (s, 1H), 6.10(s, 1H), 3.52 (s, 3H); 13C NMR (151 MHz, CDCl3) δ 168.68, 137.76, 134.17,131.83, 130.28, 130.11, 130.08, 129.49, 129.43, 128.33, 128.13, 126.34,125.45, 124.64, 124.51, 122.91 (t, J = 32.5 Hz), 119.31 (t, J = 262.2 Hz),69.37 (t, J = 25.1 Hz), 53.10; 19F NMR (471 MHz, CDCl3) δ -87.52 (d, J = 232.2Hz, 1F), -88.66 (d, J = 234.4 Hz, 1F)。
实施例9
4-溴-3,3-二氟-2-苯基-2-对甲苯硫基戊-4-烯酸甲酯(3j)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基对甲苯硫醚(1b)、2-二氮杂-2-苯基乙酸甲酯(2a)、Rh2(OAc)4、水(H2O)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1 mmol 2-溴-3,3-二氟烯丙基对甲苯硫醚、1.2 mmol 2-二氮杂-2-苯基乙酸甲酯、0.01 mmol Rh2(OAc)4、10mmol 水(H2O)加入到反应器中,在室温下反应0.5小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:20(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得367 mg产品4-溴-3,3-二氟-2-苯基-2-对甲苯硫基戊-4-烯酸甲酯3j,收率为86%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 7.51 – 7.46 (m, 2H),7.42 (d, J = 8.1 Hz, 2H), 7.36 – 7.32 (m, 3H), 7.09 (d, J = 8.0 Hz, 2H), 6.06(d, J = 2.3 Hz, 1H), 5.91 (d, J = 2.4 Hz, 1H), 3.57 (s, 3H), 2.33 (s, 3H); 13CNMR (151 MHz, CDCl3) δ 167.39, 140.54, 137.42, 134.56, 129.93, 129.53,128.77, 127.99, 127.14 (t, J = 5.8 Hz), 126.43, 122.93 (t, J = 32.4 Hz),120.51 – 115.74 (m), 70.12 (t, J = 25.0 Hz), 52.56, 21.43; 19F NMR (471 MHz,CDCl3) δ -89.77 (d, J = 244.8 Hz, 1F), -90.79 (d, J = 244.7 Hz, 1F)。
实施例10
2-苄硫基-4-溴-3,3-二氟-2-苯基戊-4-烯酸甲酯(3k)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基苄硫醚(1c)、2-二氮杂-2-苯基乙酸甲酯(2a)、Rh2(OAc)4、1,2-二氯乙烷(DCE)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1 mmol 2-溴-3,3-二氟烯丙基苄硫醚、1.2 mmol 2-二氮杂-2-苯基乙酸甲酯、0.01 mmol Rh2(OAc)4、10mmol 1,2-二氯乙烷(DCE)加入到反应器中,在室温下反应0.5小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:50(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得342 mg产品2-苄硫基-4-溴-3,3-二氟-2-苯基戊-4-烯酸甲酯3k,收率为80%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 7.56 – 7.49 (m, 2H),7.37 (dd, J = 5.1, 1.7 Hz, 3H), 7.33 – 7.26 (m, 5H), 5.93 (d, J = 2.2 Hz,1H), 5.90 (d, J = 2.4 Hz, 1H), 3.90 (d, J = 11.6 Hz, 1H), 3.80 (s, 3H), 3.74(d, J = 11.6 Hz, 1H); 13C NMR (151 MHz, CDCl3) δ 168.42, 135.74, 133.45,129.81, 129.51, 128.98, 128.75, 128.25, 127.71, 126.86 (t, J = 6.0 Hz),122.60 (t, J = 32.2 Hz), 118.64 (t, J = 259.8 Hz), 66.74 (t, J = 25.3 Hz),53.11, 52.93 – 51.49 (m); 19F NMR (471 MHz, CDCl3) δ -90.21 (s, 1F), -90.23(s, 1F)。
实施例11
4-溴-2-(4-溴苯基)硫代-3,3-二氟-2-苯基戊-4-烯酸甲酯(3l)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基-4-溴苯硫醚(1c)、2-二氮杂-2-苯基乙酸甲酯(2a)、Ag2O、二氯甲烷(DCM)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1 mmol 2-溴-3,3-二氟烯丙基-4-溴苯硫醚、1.2 mmol 2-二氮杂-2-苯基乙酸甲酯、0.01 mmol Ag2O、10 mmol二氯甲烷(DCM)加入到反应器中,在室温下反应2小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:50(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得388 mg产品4-溴-2-(4-溴苯基)硫代-3,3-二氟-2-苯基戊-4-烯酸甲酯3l,收率为79%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 7.45 – 7.42 (m, 2H),7.38 (d, J = 8.5 Hz, 2H), 7.35 – 7.31 (m, 5H), 6.04 (d, J = 2.1 Hz, 1H), 5.92(d, J = 2.4 Hz, 1H), 3.61 (s, 3H); 13C NMR (151 MHz, CDCl3) δ 167.42, 138.78,137.86, 134.28, 131.92, 129.82, 129.26, 128.96, 128.17, 127.26 (t, J = 5.9Hz), 125.12, 122.73 (t, J = 32.3 Hz), 118.25 (dd, J = 260.7, 257.9 Hz), 70.44(t, J = 25.2 Hz), 52.88; 19F NMR (471 MHz, CDCl3) δ -89.18 (d, J = 245.7 Hz,1F), -90.56 (d, J = 245.6 Hz, 1F)。
实施例12
4-(4-氯苯基)-3,3-二氟-2-苯基-2-苯硫基戊-4-烯酸甲酯(3m)的合成,具体包括以下步骤:
(1)按2-(4-氯苯基)-3,3-二氟烯丙基苯硫醚(1f)、2-二氮杂-2-苯基乙酸甲酯(2a)、Ru(PPh3)3Cl、1,2-二氯乙烷(DCE)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1mmol 2-(4-氯苯基)-3,3-二氟烯丙基苯硫醚、1.2 mmol 2-二氮杂-2-苯基乙酸甲酯、0.01mmol Ru(PPh3)3Cl、10 mmol 1,2-二氯乙烷(DCE)加入到反应器中,在室温下反应1小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:100(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得360 mg产品4-(4-氯苯基)-3,3-二氟-2-苯基-2-苯硫基戊-4-烯酸甲酯3m,收率为79%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 7.34 (d, J = 7.4 Hz,2H), 7.27 (dd, J = 8.3, 7.4 Hz, 3H), 7.23 – 7.13 (m, 9H), 5.55 (s, 1H), 5.41(s, 1H), 3.33 (s, 3H); 13C NMR (151 MHz, CDCl3) δ 167.81, 142.23 (t, J = 24.3Hz), 137.07, 136.55, 134.83, 133.82, 130.64, 130.36, 129.80, 129.70, 128.47,128.33, 127.88, 127.77, 125.18 (t, J = 8.5 Hz), 121.31 (t, J = 258.5 Hz),71.27 (t, J = 25.6 Hz), 52.47; 19F NMR (471 MHz, CDCl3) δ -90.93 (d, J = 245.8Hz, 1F), -92.27 (d, J = 245.7 Hz, 1F)。
实施例13
4-(4-乙酰苯基)-3,3-二氟-2-苯基-2-苯硫基戊-4-烯酸甲酯(3n)的合成,具体包括以下步骤:
(1)按1-(4-(1,1-二氟-3-苯硫基-1-烯丙基))苯乙酮(1j)、2-二氮杂-2-苯基乙酸甲酯(2a)、Ag2CO3、水(H2O)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1 mmol 1-(4-(1,1-二氟-3-苯硫基-1-烯-丙基))苯乙酮、1.2 mmol 2-二氮杂-2-苯基乙酸甲酯、0.01mmol Ag2CO3、10 mmol水(H2O)加入到反应器中,在室温下反应1.5小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1: 8(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得325 mg产品4-(4-乙酰苯基)-3,3-二氟-2-苯基-2-苯硫基戊-4-烯酸甲酯3n,收率为72%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 7.80 (d, J = 8.4 Hz,2H), 7.33 (dd, J = 14.5, 7.8 Hz, 4H), 7.30 – 7.26 (m, 3H), 7.21 – 7.15 (m,5H), 5.59 (s, 1H), 5.46 (s, 1H), 3.33 (s, 3H), 2.58 (s, 3H); 13C NMR (151 MHz,CDCl3) δ 197.85, 167.72, 142.98, 142.57 (t, J = 24.3 Hz), 137.09, 136.04,134.73, 130.25, 129.78, 129.76, 129.41, 128.50, 128.40, 127.77, 127.73,125.84 (t, J = 8.5 Hz), 121.26 (t, J = 258.6 Hz), 71.23 (t, J = 25.6 Hz),52.43, 26.76; 19F NMR (471 MHz, CDCl3) δ -90.71 (d, J = 246.1 Hz, 1F), -92.32(d, J = 246.0 Hz, 1F)。
实施例14
3,3-二氟-6-(4-甲氧基苯基)-4-亚甲基-2-苯基-2-苯硫基-己-5-炔酸甲酯(3o)的合成,具体包括以下步骤:
(1)按2,2-二氟亚甲基-4-(4-甲氧基苯基)-3-丁炔基苯硫醚(1h)、2-二氮杂-2-苯基乙酸甲酯(2a)、PdCl2、二氯甲烷(DCM)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1mmol 2,2-二氟亚甲基-4-(4-甲氧基苯基)-3-丁炔基苯硫醚、1.2 mmol 2-二氮杂-2-苯基乙酸甲酯、0.01 mmol PdCl2、10 mmol二氯甲烷(DCM)加入到反应器中,在室温下反应2小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:100(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得385 mg产品3,3-二氟-6-(4-甲氧基苯基)-4-亚甲基-2-苯基-2-苯硫基-己-5-炔酸甲酯3o,收率为83%,反应方程式如下:
产物核磁共振谱表征数据如下: 1H NMR (600 MHz, CDCl3) δ 7.44 (d, J = 8.3 Hz,4H), 7.27 – 7.23 (m, 1H), 7.23 – 7.19 (m, 2H), 7.19 – 7.14 (m, 5H), 6.74 –6.69 (m, 2H), 5.73 (s, 1H), 5.65 (s, 1H), 3.70 (s, 3H), 3.44 (s, 3H); 13C NMR(151 MHz, CDCl3) δ 167.64, 159.84, 137.41, 134.81, 133.18, 130.35, 130.00,129.90, 128.64, 128.79 (t, J = 6.2 Hz), 128.58, 126.70 (t, J = 29.6 Hz),121.71 – 117.56 (m), 114.70, 113.88, 92.69, 83.94 (t, J = 4.0 Hz), 70.40 (t,J = 24.9 Hz), 55.34, 52.60; 19F NMR (471 MHz, CDCl3) δ -93.55 (d, J = 241.5Hz, 1F), -94.71 (d, J = 241.4 Hz, 1F)。
实施例15
4-溴-3,3-二氟-2-甲基-2-苯硫基戊-4-烯酸乙酯(3p)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基苯硫醚(1a)、2-二氮杂-2-甲基乙酸乙酯(2i)、Rh2(OAc)4、二氯甲烷(DCM)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1 mmol 2-溴-3,3-二氟烯丙基苯硫醚、1.2 mmol 2-二氮杂-2-甲基乙酸乙酯、0.01 mmol Rh2(OAc)4、10 mmol二氯甲烷(DCM)加入到反应器中,在室温下反应2小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:100(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得292 mg产品4-溴-3,3-二氟-2-甲基-2-苯硫基戊-4-烯酸乙酯3p,收率为84%,反应方程式如下:
产物核磁共振谱表征数据如下:1H NMR (600 MHz, CDCl3) δ 7.58 (d, J = 7.5 Hz,2H), 7.41 (t, J = 7.4 Hz, 1H), 7.34 (t, J = 7.6 Hz, 2H), 6.36 (d, J = 2.1 Hz,1H), 6.05 (s, 1H), 4.21 – 4.07 (m, 2H), 1.49 (s, 3H), 1.24 (t, J = 7.2 Hz,3H); 13C NMR (151 MHz, CDCl3) δ 168.45, 168.42, 138.13, 130.18, 129.58,128.89, 125.77 (t, J = 6.3 Hz), 122.59 (t, J = 32.7 Hz), 118.12 (dd, J =256.5, 254.2 Hz),62.42, 60.66 (dd, J = 26.4, 25.5 Hz), 20.59 (t, J = 2.2 Hz)13.90;19F NMR (471 MHz, CDCl3) δ -93.28 (d, J = 246.9 Hz), -95.57 (d, J =246.9 Hz)。
实施例16
4-溴-3,3-二氟-2-甲基-2-苯硫基-2-苯乙烯基-戊-4-烯酸乙酯(3q)的合成,具体包括以下步骤:
(1)按2-溴-3,3-二氟烯丙基苯硫醚(1a)、2-二氮杂-2-苯乙烯基乙酸乙酯(2j)、Rh2(OAc)4、二氯甲烷(DCM)的摩尔比为1:1.2:0.01:10的比例,依次在N2氛围下将1 mmol 2-溴-3,3-二氟烯丙基苯硫醚、1.2 mmol 2-二氮杂-2-苯乙烯基乙酸乙酯、0.01 mmol Rh2(OAc)4、10 mmol二氯甲烷(DCM)加入到反应器中,在室温下反应2小时。
(2)所得混合产物通过减压浓缩除去溶剂得粗产品,再以乙酸乙酯/石油醚1:100(体积比)为淋洗液进行柱层析(300-400目硅胶)提纯即得338 mg产品4-溴-3,3-二氟-2-甲基-2-苯硫基-2-苯乙烯基-戊-4-烯酸乙酯3q,收率为77%,反应方程式如下:
产物核磁共振谱表征数据如下:1H NMR (600 MHz, CDCl3) δ 7.55 – 7.50 (m, 2H),7.32 (dt, J = 2.3, 1.6 Hz, 5H), 7.28 – 7.23 (m, 3H), 6.93 (d, J = 16.2 Hz,1H), 6.44 (d, J = 16.2 Hz, 1H), 6.31 (d, J = 2.6 Hz, 1H), 6.00 (d, J = 2.6Hz, 1H), 4.13 – 4.01 (m, 2H), 1.17 (t, J = 7.2 Hz, 3H); 13C NMR (151 MHz,CDCl3) δ 167.31, 137.36, 134.47, 130.09, 130.06, 129.91, 128.79, 128.67,128.00, 127.18 (t, J = 5.9 Hz), 122.83 (t, J = 32.4 Hz), 118.25 (dd, J =260.6, 258.0 Hz), 70.25 (t, J = 25.1 Hz), 52.58; 19F NMR (471 MHz, CDCl3) δ -91.60 (d, J = 247.0 Hz), -93.49 (d, J = 247.0 Hz)。
Claims (6)
1.一种烯基偕二氟亚甲基化合物,其结构式如下:
其中,R1为烷基、环烷基、苯基、苄基、烷基苯、烷氧基苯、卤代苯基、多环芳基、杂环基中的一种;R2为烷基、烷氧基、环烷基、苯基、烷基苯、烷氧基苯、卤代苯基、多环芳基或杂环基及其他不饱和烃基中的一种;R3、R4为烷基、烷氧基、环烷基、苯基、烷基苯、烷氧基苯、卤代苯基、多环芳基、酯基、杂环基、或醚基以及其他烃基中的一种。
2.根据权利要求1所述烯基偕二氟亚甲基化合物,其特征在于:不饱和烃基为芳基、烯基、杂芳基或炔基。
3.权利要求1所述烯基偕二氟亚甲基化合物的制备方法,其特征在于,具体包括以下步骤:
(1)依次在惰性气体氛围下将3,3-二氟烯丙基硫醚、重氮化合物、催化剂、溶剂按摩尔比为1:(1~3):(0.005~0.01):(10~100)的比例加入到反应器中,在室温反应10分钟~2小时即生成混合产物;
(2)通过减压浓缩得粗产品,再用乙酸乙酯、石油醚混合溶剂为淋洗液进行柱层析分离提纯即得烯基偕二氟亚甲基化合物产品。
4.根据权利要求3所述的烯基偕二氟亚甲基化合物的制备方法,其特征在于:所述3,3-二氟烯丙基硫醚化合物的通式如下:,所述重氮化合物通式如下:。
5.根据权利要求3所述的烯基偕二氟亚甲基化合物的制备方法,其特征在于:所述催化剂为Ag2CO3、Pd2(dba)3、Rh2(OAc)4、CuI、Ru(PPh3)3Cl、PdCl2、Ag2O中的一种。
6.根据权利要求3所述的烯基偕二氟亚甲基化合物的制备方法,其特征在于:所述溶剂为二甲基亚砜(DMSO)、甲苯(PhMe)、乙腈(MeCN)、1,2-二氯乙烷(DCE)、二氯甲烷(DCM)、N,N-二甲基甲酰胺(DMF)、四氢呋喃(THF)、水(H2O)中的一种。
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