NO793297L - Fremgangsmaate til fremstilling av oksymorfon - Google Patents
Fremgangsmaate til fremstilling av oksymorfonInfo
- Publication number
- NO793297L NO793297L NO793297A NO793297A NO793297L NO 793297 L NO793297 L NO 793297L NO 793297 A NO793297 A NO 793297A NO 793297 A NO793297 A NO 793297A NO 793297 L NO793297 L NO 793297L
- Authority
- NO
- Norway
- Prior art keywords
- demethylating
- boron
- approx
- amount
- boron compound
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 34
- UQCNKQCJZOAFTQ-ISWURRPUSA-N Oxymorphone Chemical compound O([C@H]1C(CC[C@]23O)=O)C4=C5[C@@]12CCN(C)[C@@H]3CC5=CC=C4O UQCNKQCJZOAFTQ-ISWURRPUSA-N 0.000 title claims description 27
- 229960005118 oxymorphone Drugs 0.000 title claims description 27
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000203 mixture Substances 0.000 claims description 31
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 claims description 30
- ILAHWRKJUDSMFH-UHFFFAOYSA-N boron tribromide Chemical compound BrB(Br)Br ILAHWRKJUDSMFH-UHFFFAOYSA-N 0.000 claims description 28
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 27
- 230000001335 demethylating effect Effects 0.000 claims description 26
- 229960002085 oxycodone Drugs 0.000 claims description 26
- BRUQQQPBMZOVGD-XFKAJCMBSA-N Oxycodone Chemical compound O=C([C@@H]1O2)CC[C@@]3(O)[C@H]4CC5=CC=C(OC)C2=C5[C@@]13CCN4C BRUQQQPBMZOVGD-XFKAJCMBSA-N 0.000 claims description 25
- 239000003795 chemical substances by application Substances 0.000 claims description 24
- 150000001639 boron compounds Chemical class 0.000 claims description 23
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 18
- 239000012429 reaction media Substances 0.000 claims description 18
- 238000006460 hydrolysis reaction Methods 0.000 claims description 17
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 claims description 16
- 230000007062 hydrolysis Effects 0.000 claims description 16
- 239000012649 demethylating agent Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000006227 byproduct Substances 0.000 claims description 8
- 239000007795 chemical reaction product Substances 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 7
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 claims description 7
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000010520 demethylation reaction Methods 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 239000000047 product Substances 0.000 claims description 4
- 239000008096 xylene Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 239000000376 reactant Substances 0.000 claims description 3
- 239000002879 Lewis base Substances 0.000 claims description 2
- 150000004820 halides Chemical class 0.000 claims description 2
- 150000007527 lewis bases Chemical class 0.000 claims description 2
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 24
- 239000010410 layer Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000002904 solvent Substances 0.000 description 8
- 239000011541 reaction mixture Substances 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 239000012044 organic layer Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000000908 ammonium hydroxide Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000017858 demethylation Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- AOJFQRQNPXYVLM-UHFFFAOYSA-N pyridin-1-ium;chloride Chemical compound [Cl-].C1=CC=[NH+]C=C1 AOJFQRQNPXYVLM-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UCTWMZQNUQWSLP-VIFPVBQESA-N (R)-adrenaline Chemical compound CNC[C@H](O)C1=CC=C(O)C(O)=C1 UCTWMZQNUQWSLP-VIFPVBQESA-N 0.000 description 1
- UNPLRYRWJLTVAE-UHFFFAOYSA-N Cloperastine hydrochloride Chemical compound Cl.C1=CC(Cl)=CC=C1C(C=1C=CC=CC=1)OCCN1CCCCC1 UNPLRYRWJLTVAE-UHFFFAOYSA-N 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 239000003849 aromatic solvent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- -1 from 5 to 20% Chemical compound 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000004081 narcotic agent Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229940124641 pain reliever Drugs 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D489/00—Heterocyclic compounds containing 4aH-8, 9 c- Iminoethano-phenanthro [4, 5-b, c, d] furan ring systems, e.g. derivatives of [4, 5-epoxy]-morphinan of the formula:
- C07D489/06—Heterocyclic compounds containing 4aH-8, 9 c- Iminoethano-phenanthro [4, 5-b, c, d] furan ring systems, e.g. derivatives of [4, 5-epoxy]-morphinan of the formula: with a hetero atom directly attached in position 14
- C07D489/08—Oxygen atom
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Polarising Elements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US95305678A | 1978-10-19 | 1978-10-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
NO793297L true NO793297L (no) | 1980-04-22 |
Family
ID=25493512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO793297A NO793297L (no) | 1978-10-19 | 1979-10-12 | Fremgangsmaate til fremstilling av oksymorfon |
Country Status (16)
Country | Link |
---|---|
JP (1) | JPS55501025A (it) |
AU (1) | AU5189779A (it) |
BE (1) | BE879494A (it) |
CA (1) | CA1108132A (it) |
CS (1) | CS211364B2 (it) |
DK (1) | DK258280A (it) |
ES (1) | ES485154A1 (it) |
FI (1) | FI793235A (it) |
FR (1) | FR2439201A1 (it) |
GB (1) | GB2049680A (it) |
IL (1) | IL58489A0 (it) |
IT (1) | IT7969032A0 (it) |
NL (1) | NL7920126A (it) |
NO (1) | NO793297L (it) |
SE (1) | SE8004454L (it) |
WO (1) | WO1980000841A1 (it) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4795813A (en) * | 1981-08-17 | 1989-01-03 | The Florida Board Of Regents On Behalf Of The Florida State University | Synthesis of derivatives of codeine and other 3-O-alkylmorphines |
US5668285A (en) * | 1986-10-31 | 1997-09-16 | The United States Of America As Represented By The Department Of Health And Human Services | Total synthesis of northebaine, normophine, noroxymorphone enantiomers and derivatives via N-Nor intermediates |
FR2636330B1 (fr) * | 1988-09-13 | 1990-11-30 | Sanofi Sa | Procede de preparation de derives de morphinane |
ATE178329T1 (de) * | 1989-10-16 | 1999-04-15 | Us Health | Totale synthese von northebain-, normorphin-, noroxymorphon-enantiomeren und -derivaten via n- nor-zwischenverbindungen |
US8329216B2 (en) | 2001-07-06 | 2012-12-11 | Endo Pharmaceuticals Inc. | Oxymorphone controlled release formulations |
KR20030034171A (ko) | 2001-07-06 | 2003-05-01 | 엔도 파마슈티걸즈, 인크. | 옥시모르폰 제어 방출 제형 |
US7776314B2 (en) | 2002-06-17 | 2010-08-17 | Grunenthal Gmbh | Abuse-proofed dosage system |
DE102005005446A1 (de) | 2005-02-04 | 2006-08-10 | Grünenthal GmbH | Bruchfeste Darreichungsformen mit retardierter Freisetzung |
US20070048228A1 (en) | 2003-08-06 | 2007-03-01 | Elisabeth Arkenau-Maric | Abuse-proofed dosage form |
DE10336400A1 (de) | 2003-08-06 | 2005-03-24 | Grünenthal GmbH | Gegen Missbrauch gesicherte Darreichungsform |
DE10361596A1 (de) | 2003-12-24 | 2005-09-29 | Grünenthal GmbH | Verfahren zur Herstellung einer gegen Missbrauch gesicherten Darreichungsform |
DE102004032049A1 (de) | 2004-07-01 | 2006-01-19 | Grünenthal GmbH | Gegen Missbrauch gesicherte, orale Darreichungsform |
DE102005005449A1 (de) | 2005-02-04 | 2006-08-10 | Grünenthal GmbH | Verfahren zur Herstellung einer gegen Missbrauch gesicherten Darreichungsform |
JP5695296B2 (ja) | 2006-03-02 | 2015-04-01 | マリンクロッド エルエルシー | 低レベルのアルファ,ベータ−不飽和ケトン化合物を伴うモルフィナン−6−オン生成物の製造方法 |
NZ586792A (en) | 2008-01-25 | 2012-09-28 | Gruenenthal Chemie | Tamper resistant controlled release pharmaceutical tablets form having convex and concave surfaces |
BRPI0912014A2 (pt) | 2008-05-09 | 2019-03-06 | Grünenthal GmbH | processo para a preparação de uma formulação em pó intermediária e uma forma de dosagem sólida final sob uso de uma etapa de congelamento por atomização |
ES2718688T3 (es) | 2009-07-22 | 2019-07-03 | Gruenenthal Gmbh | Forma de dosificación resistente a la manipulación para opioides sensibles a la oxidación |
CA2765971C (en) | 2009-07-22 | 2017-08-22 | Gruenenthal Gmbh | Hot-melt extruded controlled release dosage form |
NZ608865A (en) | 2010-09-02 | 2015-03-27 | Gruenenthal Chemie | Tamper resistant dosage form comprising an anionic polymer |
PE20131102A1 (es) | 2010-09-02 | 2013-10-12 | Gruenenthal Chemie | Forma de dosificacion resistente a manipulacion que comprende una sal inorganica |
SI2736497T1 (sl) | 2011-07-29 | 2017-12-29 | Gruenenthal Gmbh | Tableta, odporna proti zlorabi, ki zagotavlja takojšnje sproščanje zdravila |
EP2736495B1 (en) | 2011-07-29 | 2017-08-23 | Grünenthal GmbH | Tamper-resistant tablet providing immediate drug release |
JP6117249B2 (ja) | 2012-02-28 | 2017-04-19 | グリュネンタール・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | 薬理学的に活性な化合物および陰イオン性ポリマーを含むタンパーレジスタント剤形 |
JP6282261B2 (ja) | 2012-04-18 | 2018-02-21 | グリュネンタール・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | 不正使用防止および過量放出防止医薬剤形 |
US10064945B2 (en) | 2012-05-11 | 2018-09-04 | Gruenenthal Gmbh | Thermoformed, tamper-resistant pharmaceutical dosage form containing zinc |
AR096439A1 (es) | 2013-05-29 | 2015-12-30 | Gruenenthal Gmbh | Forma de dosificación resistente al uso indebido que contiene una o más partículas |
MX371432B (es) | 2013-05-29 | 2020-01-30 | Gruenenthal Gmbh | Forma de dosificacion resistente al uso indebido que contiene una o mas particulas. |
JP6449871B2 (ja) | 2013-07-12 | 2019-01-09 | グリュネンタール・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | エチレン−酢酸ビニルポリマーを含有する改変防止剤形 |
WO2015078891A1 (en) | 2013-11-26 | 2015-06-04 | Farmaceutici Formenti S.P.A. | Preparation of a powdery pharmaceutical composition by means of cryo-milling |
EP3142646A1 (en) | 2014-05-12 | 2017-03-22 | Grünenthal GmbH | Tamper resistant immediate release capsule formulation comprising tapentadol |
JP2017516789A (ja) | 2014-05-26 | 2017-06-22 | グリュネンタール・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | エタノール過量放出に対して防護されている多粒子 |
BR112017021475A2 (pt) | 2015-04-24 | 2018-07-10 | Gruenenthal Gmbh | forma de dosagem resistente à adulteração (tamper) com liberação imediata e resistência contra extração de solvente |
JP2018526414A (ja) | 2015-09-10 | 2018-09-13 | グリュネンタール・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | 乱用抑止性の即放性製剤を用いた経口過剰摂取に対する保護 |
ES2701855T3 (es) | 2016-05-31 | 2019-02-26 | Alcaliber Investig Desarrollo E Innovacion Slu | Proceso para la obtención de 3,14-diacetiloximorfona a partir de oripavina |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3249616A (en) * | 1966-05-03 | Ix-dfflydroxy-g-oxo-n-phenethylmor- phinan (cis) and production thereof | ||
US2806033A (en) * | 1955-08-03 | 1957-09-10 | Lewenstein | Morphine derivative |
US3775414A (en) * | 1972-05-10 | 1973-11-27 | Bristol Myers Co | Process for the preparation of 14-hydroxymorphinan derivatives |
-
1979
- 1979-10-12 NO NO793297A patent/NO793297L/no unknown
- 1979-10-18 WO PCT/US1979/000862 patent/WO1980000841A1/en unknown
- 1979-10-18 ES ES485154A patent/ES485154A1/es not_active Expired
- 1979-10-18 CA CA337,908A patent/CA1108132A/en not_active Expired
- 1979-10-18 IL IL58489A patent/IL58489A0/xx unknown
- 1979-10-18 JP JP50190279A patent/JPS55501025A/ja active Pending
- 1979-10-18 AU AU51897/79A patent/AU5189779A/en not_active Abandoned
- 1979-10-18 NL NL7920126A patent/NL7920126A/nl unknown
- 1979-10-18 IT IT7969032A patent/IT7969032A0/it unknown
- 1979-10-18 BE BE0/197710A patent/BE879494A/fr unknown
- 1979-10-18 FI FI793235A patent/FI793235A/fi not_active Application Discontinuation
- 1979-10-18 FR FR7925895A patent/FR2439201A1/fr not_active Withdrawn
- 1979-10-18 GB GB8014422A patent/GB2049680A/en not_active Withdrawn
- 1979-10-19 CS CS797115A patent/CS211364B2/cs unknown
-
1980
- 1980-06-16 SE SE8004454A patent/SE8004454L/xx not_active Application Discontinuation
- 1980-06-17 DK DK258280A patent/DK258280A/da unknown
Also Published As
Publication number | Publication date |
---|---|
FI793235A (fi) | 1980-04-20 |
SE8004454L (sv) | 1980-06-16 |
IT7969032A0 (it) | 1979-10-18 |
IL58489A0 (en) | 1980-01-31 |
AU5189779A (en) | 1980-04-24 |
NL7920126A (nl) | 1980-08-29 |
GB2049680A (en) | 1980-12-31 |
BE879494A (fr) | 1980-02-15 |
DK258280A (da) | 1980-06-17 |
JPS55501025A (it) | 1980-11-27 |
ES485154A1 (es) | 1980-06-16 |
WO1980000841A1 (en) | 1980-05-01 |
CA1108132A (en) | 1981-09-01 |
CS211364B2 (en) | 1982-02-26 |
FR2439201A1 (fr) | 1980-05-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
NO793297L (no) | Fremgangsmaate til fremstilling av oksymorfon | |
US4521633A (en) | Bromination process | |
US3933852A (en) | Process for making N-methyl nitrophthalimides | |
Hudeček et al. | An improved method for the synthesis of η6-arenetricarbonylchromium complexes | |
US2107650A (en) | Preparation of pentachlorophenol | |
US6049014A (en) | Process for the manufacture of tetrabromobisphenol-A with co-production of n-propyl bromide | |
JP4049534B2 (ja) | O−アルキル−n−シアノアセトイミデ−トの製造方法 | |
EP1041080B1 (en) | Process for the preparation of pentaacetyl-beta-D-glucopyranose | |
JPS6334856B2 (it) | ||
Coumbarides et al. | Investigations into the bromination of substituted phenols using diethyl bromomalonate and diethyl dibromomalonate | |
EP0148145B1 (en) | Process for making nitrodiarylamines | |
US2425283A (en) | Preparation of allylglycine | |
NO137093B (no) | Fremgangsm}te til fremstilling av 2,4-diamino-5-benzylpyrimidiner | |
JPH02149586A (ja) | メタ硼酸アリールの製造方法及びo―ヒドロキシベンジルアルコール類の製造へのメタ硼酸アリールの利用 | |
Marsili et al. | Reactions of 3, 4-disubstituted 4-oxazolin-2-ones. III. Reaction of 3, 4-diphenyl-4-oxazolin-2-one with organic nitrites | |
CA1134839A (en) | Preparation of 5-hydroxymethylimidazoles | |
US4291178A (en) | Preparation of ortho-hydroxybenzyl alcohols | |
JPS59222430A (ja) | フルオロシクロプロパン誘導体 | |
EP0405928B1 (en) | Process for producing 1,4-dihydroxy-2-arylnaphthoate | |
US4365072A (en) | Biphenyl aldehydes | |
CA1284153C (en) | Preparation of alkyl trifluroacetoacetate | |
Kadaba et al. | Convenient Syntheses of m-Anisidine | |
US4246176A (en) | Synthesis of 5-aroyl-1-hydrocarbylpyrrole-2-acetic acid | |
US4175192A (en) | Process for preparing quininone | |
US5241103A (en) | Process for producing 1,4-dihydroxy-2-arylnaphthoate |