CN106431800B - (E) synthetic method of -4- oxo -2- butylene aldehyde compound - Google Patents
(E) synthetic method of -4- oxo -2- butylene aldehyde compound Download PDFInfo
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- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D213/44—Radicals substituted by doubly-bound oxygen, sulfur, or nitrogen atoms, or by two such atoms singly-bound to the same carbon atom
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- 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
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Abstract
The invention discloses it is a kind of (E) -4- oxo -2- butylene aldehyde compound synthetic method, belong to the synthesis technical field of aldehyde compound.Technical solution of the present invention main points are:Will (E)-4- nitro-2- butene-1 -one class compound 1 is dissolved in organic solvent, and oxidant is then added, be made in air or oxygen atmosphere in 40-100 DEG C of reaction (E) -4- oxo -2- butylene aldehyde compound 2.Synthesis process of the present invention is single step reaction, and method is simple, and raw material is easily prepared, and reaction is carried out at 100 DEG C or less, and mild condition is easy to operate, applied widely, the product configuration stereoselectivity height of substrate.
Description
Technical field
The invention belongs to technical field of organic synthesis, and in particular to one kind (E) -4- oxo -2- butylene aldehyde compound
Synthetic method.
Background technique
4- oxo -2- crotonaldehyde belongs to Isosorbide-5-Nitrae-dicarbapentaborane class compound, is having because having active, multiplicity reactivity worth
The fields such as machine synthesis, medicine, chemical industry and material have important application value.Currently, the method for synthesis 4- oxo -2- crotonaldehyde
The oxygen of the main hydrolysis including acid catalysis dimethoxy dihydrofuran, furan derivatives or 2- butylene-1,4-diol class compound
The intermolecular cross-coupling and palladium chtalyst acyl chlorides and tin of change, 1,3- dicarbonyl compound and methyl ketone are for ketene compounds
Reductive coupling reaction etc..The above method although 4- oxo -2- butylene aldehyde compound can be synthesized effectively, there are still it is some not
Foot place, if you need to use, the mixture of noble metal catalyst, different stereoisomers easily generated, functional group compatibility is poor, reacts
Condition is violent, reaction step is cumbersome etc., so that the practicality be made to be restricted.Therefore, it is necessary to further study and develop 4- oxygen
The simplicity of generation -2- butylene aldehyde compound, efficiently synthesizes new method at economy.
Summary of the invention
The technical problem to be solved by the present invention is to provide the synthesis sides of one kind (E) -4- oxo -2- butylene aldehyde compound
Method, the synthetic method is from the raw material simply easily prepared, by single step reaction, directly obtains (E) -4- oxo -2- crotonaldehyde
Class compound, easy to operate, mild condition, wide application range of substrates are suitable for industrialized production.
The present invention adopts the following technical scheme that solve above-mentioned technical problem, (E) -4- oxo -2- butylene aldehyde compound
Synthetic method, it is characterised in that:(E)-4- nitro-2- butene-1 -one class compound 1 is dissolved in organic solvent, then plus
Enter oxidant, is reacted in air or oxygen atmosphere in 40-100 DEG C and (E) -4- oxo -2- butylene aldehyde compound 2 is made, it should
Reaction equation in synthetic method is:
Wherein R1For 1- naphthalene, 4- pyridyl group, 2- thienyl, phenyl or substituted-phenyl, taking on the substituted-phenyl phenyl ring
One of Dai Jiwei fluorine, chlorine, bromine, methyl, trifluoromethyl or methoxyl group are a variety of, and the position of substituent group is the neighbour on phenyl ring
Position, meta or para position, R2For hydrogen, alkyl or phenyl, R3For hydrogen or alkyl, oxidant is tetramethyl piperidine nitrogen oxides
(TEMPO), di-tert-butyl peroxide (TBP) or manganese dioxide (MnO2), organic solvent is toluene, acetonitrile, Isosorbide-5-Nitrae dioxane
Or dichloroethanes.
It further limits, the substance that feeds intake of (E)-4- nitro-2- butene-1 -one class compound 1 and oxidant
The ratio between amount is 1:0.5-2.
Compared with the prior art, the present invention has the following advantages:(1) synthesis process is single step reaction, and method is simple;(2) former
Expect easily prepared;(3) reaction is carried out at 100 DEG C or less, and mild condition is easy to operate;(4) substrate is applied widely;(5) it produces
Object configuration stereoselectivity is high.Therefore, the present invention provides a kind of warp for the synthesis of (E) -4- oxo -2- butylene aldehyde compound
Ji, practical, green new method.
Specific embodiment
Above content of the invention is described in further detail by the following examples, but this should not be interpreted as to this
The range for inventing above-mentioned theme is only limitted to embodiment below, and all technologies realized based on above content of the present invention belong to this hair
Bright range.
Embodiment 1
1a (0.5mmol, 96mg) and dichloroethanes (DCE, 3mL) are added in the reaction flask of 25mL, TEMPO is then added
(0.5mmol,78mg).It is stirred to react under oxygen (1atm) atmosphere in 70 DEG C 10 hours, it is molten that 8mL saturated sodium-chloride is then added
Liquid quenching reaction is extracted with ethyl acetate (8mL × 3), merges organic phase, and anhydrous sodium sulfate is dry.Filtering, is spin-dried for, and crosses silica gel
Post separation (petrol ether/ethyl acetate=20:1) yellow liquid product (E) -4- oxo -4- phenyl -2- crotonaldehyde 2a (72mg,
90%).The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:7.00(dd,J1=16.0Hz, J2=
7.6Hz, 1H), 7.54 (t, J=7.6Hz, 2H), 7.66 (t, J=7.6Hz, 1H), 7.72 (d, J=15.6Hz, 1H), 7.99
(d, J=7.2Hz, 2H), 9.90 (d, J=7.6Hz, 1H)13C NMR(150MHz,CDCl3)δ:128.9,129.1,134.2,
136.3,139.2,142.1,189.8,192.8.MS:m/z 161[MH]+。
Embodiment 2
By method described in embodiment 1,1a (0.5mmol, 96mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react in 70 DEG C 10 hours, is then added in air atmosphere
8mL saturated sodium chloride solution quenching reaction, is extracted with ethyl acetate (8mL × 3), merges organic phase, and anhydrous sodium sulfate is dry.It crosses
Filter, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product (E) -4- oxo -4- phenyl -2- is obtained
Crotonaldehyde 2a (61mg, 76%).
Embodiment 3
By method described in embodiment 1,1a (0.5mmol, 96mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under nitrogen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product (E) -4- oxo -4- benzene is obtained
Base -2- crotonaldehyde 2a (16mg, 20%).
Embodiment 4
By method described in embodiment 1,1a (0.5mmol, 96mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (1mmol, 156mg) is added in (3mL).It is stirred to react in air atmosphere in 70 DEG C 10 hours, 8mL is then added
Saturated sodium chloride solution quenching reaction is extracted with ethyl acetate (8mL × 3), merges organic phase, and anhydrous sodium sulfate is dry.Filtering,
It is spin-dried for, crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product (E) -4- oxo -4- phenyl -2- fourth is obtained
Olefine aldehydr 2a (70mg, 88%).
Embodiment 5
By method described in embodiment 1,1a (0.5mmol, 96mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.25mmol, 39mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, so
8mL saturated sodium chloride solution quenching reaction is added afterwards, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product (E) -4- oxo -4- is obtained
Phenyl -2- crotonaldehyde 2a (44mg, 55%).
Embodiment 6
By method described in embodiment 1,1a (0.5mmol, 96mg) and dichloroethanes are added in the reaction flask of 25mL
Then TBP (0.5mmol, 58 μ L) are added in (3mL).Be stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then plus
Enter 8mL saturated sodium chloride solution quenching reaction, be extracted with ethyl acetate (8mL × 3), merge organic phase, anhydrous sodium sulfate is dry.
Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product (E) -4- oxo -4- phenyl-is obtained
2- crotonaldehyde 2a (16mg, 20%).
Embodiment 7
By method described in embodiment 1,1a (0.5mmol, 96mg) and dichloroethanes are added in the reaction flask of 25mL
(3mL), is then added MnO2(0.5mmol,44mg).It is stirred to react in air atmosphere in 70 DEG C 10 hours, 8mL is then added
Saturated sodium chloride solution quenching reaction is extracted with ethyl acetate (8mL × 3), merges organic phase, and anhydrous sodium sulfate is dry.Filtering,
It is spin-dried for, crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product (E) -4- oxo -4- phenyl -2- fourth is obtained
Olefine aldehydr 2a (13mg, 16%).
Embodiment 8
By method described in embodiment 1,1a (0.5mmol, 96mg) and toluene (3mL) are added in the reaction flask of 25mL,
Then TEMPO (0.5mmol, 78mg) is added.It is stirred to react 10 hours under oxygen (1atm) atmosphere in 70 DEG C, is then added
8mL saturated sodium chloride solution quenching reaction, is extracted with ethyl acetate (8mL × 3), merges organic phase, and anhydrous sodium sulfate is dry.It crosses
Filter, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product (E) -4- oxo -4- phenyl -2- is obtained
Crotonaldehyde 2a (56mg, 70%).
Embodiment 9
By method described in embodiment 1,1a (0.5mmol, 96mg) and acetonitrile (3mL) are added in the reaction flask of 25mL,
Then TEMPO (0.5mmol, 78mg) is added.It is stirred to react 10 hours under oxygen (1atm) atmosphere in 70 DEG C, is then added
8mL saturated sodium chloride solution quenching reaction, is extracted with ethyl acetate (8mL × 3), merges organic phase, and anhydrous sodium sulfate is dry.It crosses
Filter, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product (E) -4- oxo -4- phenyl -2- is obtained
Crotonaldehyde 2a (49mg, 61%).
Embodiment 10
By method described in embodiment 1,1a (0.5mmol, 96mg) and Isosorbide-5-Nitrae-dioxy six are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in ring (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, so
8mL saturated sodium chloride solution quenching reaction is added afterwards, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product (E) -4- oxo -4- is obtained
Phenyl -2- crotonaldehyde 2a (45mg, 56%).
Embodiment 11
By method described in embodiment 1,1a (0.5mmol, 96mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 40 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product (E) -4- oxo -4- benzene is obtained
Base -2- crotonaldehyde 2a (42mg, 52%).
Embodiment 12
By method described in embodiment 1,1a (0.5mmol, 96mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 100 DEG C under oxygen (1atm) atmosphere, so
8mL saturated sodium chloride solution quenching reaction is added afterwards, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product (E) -4- oxo -4- is obtained
Phenyl -2- crotonaldehyde 2a (66mg, 83%).
Embodiment 13
By method described in embodiment 1,1b (0.5mmol, 135mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product 2b (106mg, 89%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:6.74(dd,J1=15.6Hz, J2=7.6Hz, 1H),
7.36 (d, J=16.0Hz, 1H), 7.39-7.47 (m, 3H), 7.66 (d, J=7.6Hz, 1H), 9.88 (d, J=7.6Hz, 1H)
.13C NMR(150MHz,CDCl3)δ:119.7,127.8,129.8,132.8,133.8,139.2,139.3,144.2,192.9,
193.5.MS:m/z 239[MH]+。
Embodiment 14
By method described in embodiment 1,1c (0.5mmol, 113mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product 2c (83mg, 86%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:7.00(dd,J1=15.6Hz, J2=7.2Hz, 1H),
7.49 (t, J=8.0Hz, 1H), 7.62-7.85 (m, 2H), 7.86 (d, J=8.0Hz, 1H), 7.96 (d, J=1.6Hz, 1H),
9.90 (d, J=7.2Hz, 1H)13C NMR(100MHz,CDCl3)δ:126.9,128.8,130.4,134.1,135.4,
137.8,139.6,141.1,188.5,192.5.MS:m/z 195[MH]+。
Embodiment 15
By method described in embodiment 1,1d (0.5mmol, 103mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product 2d (80mg, 92%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:2.39(s,3H),6.93(dd,J1=16.0Hz, J2
=7.6Hz, 1H), 7.26 (d, J=8.0Hz, 2H), 7.66 (d, J=15.6Hz, 1H), 7.84 (d, J=8.8Hz, 2H), 9.83
(d, J=7.6Hz, 1H)13C NMR(100MHz,CDCl3)δ:21.8,129.1,129.8,133.9,138.9,142.5,
145.4,189.3,192.9.MS:m/z 175[MH]+。
Embodiment 16
By method described in embodiment 1,1e (0.5mmol, 105mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product 2e (72mg, 81%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:6.94(dd,J1=15.6Hz, J2=7.2Hz, 1H),
7.14 (t, J=7.6Hz, 2H), 7.63 (d, J=15.6Hz, 1H), 7.96-7.99 (m, 2H), 9.82 (d, J=7.2Hz, 1H)
.13C NMR(100MHz,CDCl3)δ:116.2(d,2JC-F=22.3Hz), 131.6 (d,3JC-F=9.8Hz), 132.7 (d,4JC-F
=3.0Hz), 139.2,141.6,166.4 (d,1JC-F=254.9Hz), 188.2,192.6.MS:m/z 179[MH]+。
Embodiment 17
By method described in embodiment 1,1f (0.5mmol, 126mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=10:1) yellow liquid product 2f (90mg, 82%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:3.96(s,3H),3.97(s,3H),6.92-7.02
(m, 2H), 7.57 (d, J=2.0Hz, 1H), 7.63 (dd, J1=8.0Hz, J2=2.0Hz, 1H), 7.74 (d, J=15.6Hz,
1H), 9.87 (d, J=7.6Hz, 1H)13C NMR(100MHz,CDCl3)δ:56.1,56.2,110.1,110.6,124.2,
129.7,138.6,142.3,149.7,154.5,187.8,193.0.MS:m/z 221[MH]+。
Embodiment 18
By method described in embodiment 1,1g (0.5mmol, 112mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product 2g (88mg, 92%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:2.39 (d, J=1.2Hz, 3H), 6.18 (dd, J1=
7.2Hz,J2=1.6Hz, 1H), 7.20-7.26 (m, 1H), 7.39-7.43 (m, 2H), 7.48 (dd, J1=6.0Hz, J2=
1.2Hz, 1H), 10.20 (d, J=7.2Hz, 1H)13C NMR(100MHz,CDCl3)δ:14.0,116.4(d,2JC-F=
22.6Hz),120.6(d,2JC-F=21.6Hz), 125.6 (d,4JC-F=3.1Hz), 130.5 (d,3JC-F=7.6Hz), 133.2,
137.4(d,3JC-F=5.6Hz), 152.5,162.7 (d,1JC-F=247.1Hz), 191.3,196.6 (d,4JC-F=2.0Hz)
.MS:m/z 193[MH]+。
Embodiment 19
By method described in embodiment 1,1h (0.5mmol, 142mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow solid product 2h (120mg, 95%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:2.36 (d, J=1.6Hz, 3H), 6.12 (dd, J1=
7.6Hz,J2=1.2Hz, 1H), 7.52-7.58 (m, 4H), 10.17 (d, J=7.6Hz, 1H)13C NMR(100MHz,CDCl3)
δ:14.1,128.8,131.2,132.0,132.8,134.1,152.6,191.3,196.8.MS:m/z 253[MH]+。
Embodiment 20
By method described in embodiment 1,1i (0.5mmol, 133mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow solid product 2i (111mg, 95%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:2.41 (d, J=1.6Hz, 3H), 3.89 (s, 3H),
3.92(s,3H),6.13(dd,J1=8.0Hz, J2=1.2Hz, 1H), 6.85 (d, J=8.4Hz, 1H), 7.35 (dd, J1=
8.0Hz,J2=2.0Hz, 1H), 7.41 (d, J=2.0Hz, 1H), 10.20 (d, J=7.6Hz, 1H)13C NMR(100MHz,
CDCl3)δ:14.6,56.0,56.1,109.8,111.0,125.4,127.7,131.0,149.4,154.0,154.1,191.3,
196.1.MS:m/z 235[MH]+。
Embodiment 21
By method described in embodiment 1,1j (0.5mmol, 128mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product 2j (104mg, 93%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:2.55 (d, J=1.2Hz, 3H), 6.28 (dd, J1=
7.2Hz,J2=1.2Hz, 1H), 7.49-7.59 (m, 4H), 7.92 (m, 1H), 8.03 (d, J=8.0Hz, 1H), 8.12 (d, J=
8.8Hz, 1H), 10.32 (d, J=7.2Hz, 1H)13C NMR(100MHz,CDCl3)δ:13.1,124.3,125.2,126.8,
127.8,128.4,128.6,130.8,132.4,133.8,134.4,135.3,153.7,192.1,200.1.MS:m/z 225
[MH]+。
Embodiment 22
By method described in embodiment 1,1k (0.5mmol, 103mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=10:1) yellow liquid product 2k (69mg, 79%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:2.48 (d, J=1.6Hz, 3H), 6.31 (d, J=
7.2Hz,1H),7.55(dd,J1=4.4Hz, J2=1.6Hz, 2H), 8.82-8.83 (m, 2H), 10.33 (d, J=7.2Hz,
1H).13C NMR(100MHz,CDCl3)δ:13.3,119.9,122.4,134.9,142.5,150.8,191.3,197.1.MS:
m/z 176[MH]+。
Embodiment 23
By method described in embodiment 1,1l (0.5mmol, 134mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product 2l (106mg, 90%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:6.33 (d, J=7.6Hz, 1H), 7.42-7.50 (m,
7H),7.58-7.61(m,1H),7.90(dd,J1=7.2Hz, J2=1.2Hz, 2H), 9.83 (d, J=7.2Hz, 1H)13C
NMR(100MHz,CDCl3)δ:128.7,128.9,129.7,130.0,130.2,130.7,132.4,134.0,135.1,
157.2,192.7,195.3.MS:m/z 237[MH]+。
Embodiment 24
By method described in embodiment 1,1m (0.5mmol, 137mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow liquid product 2m (115mg, 95%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:2.06 (d, J=1.6Hz, 3H), 7.36 (d, J=
1.6Hz, 1H), 7.74 (d, J=8.8Hz, 2H), 8.02 (d, J=8.4Hz, 2H), 9.66 (s, 1H)13C NMR(150MHz,
CDCl3)δ:11.6,123.6(d,1JC-F=271.2Hz), 126.5 (d,4JC-F=3.6Hz), 128.9 (d,3JC-F=5.9Hz),
130.9,135.2(d,2JC-F=32.7Hz), 139.9,149.4,190.8,194.3.MS:m/z 243[MH]+。
Embodiment 25
By method described in embodiment 1,1n (0.5mmol, 118mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow solid product 2n (94mg, 92%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:2.03 (s, 3H), 3.90 (s, 3H), 7.00 (d, J=
9.6Hz, 2H), 7.38 (d, J=1.2Hz, 1H), 7.95 (d, J=9.2Hz, 2H), 9.67 (s, 1H)13C NMR(100MHz,
CDCl3)δ:11.3,55.5,127.0,130.0,131.0,141.0,147.0,164.3,190.5,194.7.MS:m/z 205
[MH]+。
Embodiment 26
By method described in embodiment 1,1o (0.5mmol, 128mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow solid product 2o (90mg, 80%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:2.11 (d, J=1.2Hz, 3H), 7.35 (d, J=
1.6Hz, 1H), 7.52-7.69 (m, 3H), 7.90-7.95 (m, 2H), 8.08 (d, J=8.4Hz, 1H), 8.78 (d, J=
8.8Hz,1H),9.69(s,1H).13C NMR(100MHz,CDCl3)δ:11.3,124.5,125.6,126.9,128.6,
128.8,130.0,130.3,134.0,134.2,134.8,143.1,147.4,194.9,195.1.MS:m/z 225[MH]+。
Embodiment 27
By method described in embodiment 1,1p (0.5mmol, 106mg) and dichloroethanes are added in the reaction flask of 25mL
Then TEMPO (0.5mmol, 78mg) is added in (3mL).It is stirred to react 10 hours in 70 DEG C under oxygen (1atm) atmosphere, then
8mL saturated sodium chloride solution quenching reaction is added, is extracted with ethyl acetate (8mL × 3), merges organic phase, anhydrous sodium sulfate is dry
It is dry.Filtering, is spin-dried for, and crosses silica gel post separation (petrol ether/ethyl acetate=20:1) yellow solid product 2p (85mg, 94%) is obtained.
The characterize data of the compound is as follows:1H NMR(400MHz,CDCl3)δ:2.17 (s, 3H), 7.20 (t, J=4.4Hz, 1H),
7.36 (s, 1H), 7.77 (d, J=4.0Hz, 1H), 7.81 (d, J=4.0Hz, 1H), 9.67 (s, 1H)13C NMR(100MHz,
CDCl3)δ:11.3,128.6,132.8,135.5,138.3,145.0,148.8,183.3,194.7.MS:m/z 181[MH]+。
Embodiment above describes basic principles and main features of the invention and advantages.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, under the range for not departing from the principle of the invention, various changes and improvements may be made to the invention, these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (2)
- The synthetic method of (1. E) -4- oxo -2- butylene aldehyde compound, it is characterised in that:By (E)-4- nitro-2- butene-1- Ketone compounds 1 are dissolved in organic solvent, and oxidant is then added, and are made in air or oxygen atmosphere in 40-100 DEG C of reaction (E) -4- oxo -2- butylene aldehyde compound 2, the reaction equation in the synthetic method are:Wherein R1For 1- naphthalene, 4- pyridyl group, 2- thienyl, phenyl or substituted-phenyl, the substituent group on the substituted-phenyl phenyl ring is One of fluorine, chlorine, bromine, methyl, trifluoromethyl or methoxyl group are a variety of, and the position of substituent group is the ortho position on phenyl ring, meta position Or contraposition, R2For hydrogen, alkyl or phenyl, R3For hydrogen or alkyl, oxidant is tetramethyl piperidine nitrogen oxides, and organic solvent is first Benzene, acetonitrile, 1,4 dioxane or dichloroethanes.
- 2. the synthetic method of (E) -4- oxo -2- butylene aldehyde compound according to claim 1, it is characterised in that:Institute The ratio between amount for the substance that feeds intake of (the E)-4- nitro-2- butene-1 -one class compound 1 and oxidant stated is 1:0.5-2.
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