EG24123A - Process for preparing sildenafil - Google Patents

Process for preparing sildenafil

Info

Publication number
EG24123A
EG24123A EG54097A EG54097A EG24123A EG 24123 A EG24123 A EG 24123A EG 54097 A EG54097 A EG 54097A EG 54097 A EG54097 A EG 54097A EG 24123 A EG24123 A EG 24123A
Authority
EG
Egypt
Prior art keywords
preparing sildenafil
sildenafil
preparing
Prior art date
Application number
EG54097A
Other languages
English (en)
Inventor
Peter J Dunn
Original Assignee
Pfizer Res And Dev Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10795332&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EG24123(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Pfizer Res And Dev Company filed Critical Pfizer Res And Dev Company
Application granted granted Critical
Publication of EG24123A publication Critical patent/EG24123A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
    • C07D295/22—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with hetero atoms directly attached to ring nitrogen atoms
    • C07D295/26—Sulfur atoms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P13/00—Drugs for disorders of the urinary system
    • A61P13/02—Drugs for disorders of the urinary system of urine or of the urinary tract, e.g. urine acidifiers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives
    • A61P15/10—Drugs for genital or sexual disorders; Contraceptives for impotence
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
    • C07D241/02—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings
    • C07D241/04—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
    • C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
    • C07D403/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/04—Ortho-condensed systems

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Endocrinology (AREA)
  • Reproductive Health (AREA)
  • Gynecology & Obstetrics (AREA)
  • Urology & Nephrology (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Steroid Compounds (AREA)
EG54097A 1996-06-14 1997-06-12 Process for preparing sildenafil EG24123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9612514.1A GB9612514D0 (en) 1996-06-14 1996-06-14 Novel process

Publications (1)

Publication Number Publication Date
EG24123A true EG24123A (en) 2008-07-06

Family

ID=10795332

Family Applications (1)

Application Number Title Priority Date Filing Date
EG54097A EG24123A (en) 1996-06-14 1997-06-12 Process for preparing sildenafil

Country Status (48)

Country Link
US (2) US5955611A (es)
EP (2) EP0812845B1 (es)
JP (2) JP2866841B2 (es)
KR (1) KR100207352B1 (es)
CN (2) CN1106399C (es)
AP (1) AP717A (es)
AR (1) AR003401A1 (es)
AT (2) ATE182150T1 (es)
AU (1) AU697684B2 (es)
BG (1) BG62554B1 (es)
BR (1) BR9703580A (es)
CA (1) CA2207694C (es)
CO (1) CO4780028A1 (es)
CZ (1) CZ290942B6 (es)
DE (2) DE69723846T2 (es)
DK (2) DK0916675T3 (es)
DZ (1) DZ2247A1 (es)
EA (1) EA000102B1 (es)
EG (1) EG24123A (es)
ES (2) ES2201397T3 (es)
GB (1) GB9612514D0 (es)
GR (1) GR3031087T3 (es)
HK (1) HK1033459A1 (es)
HN (1) HN1997000072A (es)
HR (1) HRP970326B1 (es)
HU (1) HU224497B1 (es)
ID (1) ID18745A (es)
IL (3) IL121000A (es)
IN (5) IN187350B (es)
IS (2) IS1922B (es)
MA (1) MA24205A1 (es)
MX (1) MX9704433A (es)
NO (2) NO304551B1 (es)
NZ (1) NZ328084A (es)
OA (1) OA10426A (es)
PE (2) PE1299A1 (es)
PL (1) PL189333B1 (es)
PT (1) PT916675E (es)
RS (2) RS49653B (es)
SA (1) SA97180124B1 (es)
SG (1) SG50024A1 (es)
SI (2) SI0812845T1 (es)
SK (5) SK283896B6 (es)
TN (1) TNSN97102A1 (es)
TR (1) TR199700470A2 (es)
UA (1) UA27085C2 (es)
UY (2) UY24585A1 (es)
ZA (1) ZA975259B (es)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060222647A1 (en) * 1993-05-27 2006-10-05 Beavo Joseph A Methods and compositions for modulating the activity of PDE5
SK285991B6 (sk) 1997-04-25 2008-01-07 Pfizer Inc. Pyrazolopyrimidinóny, spôsob a medziprodukty na ich výrobu, ich použitie a farmaceutické a veterinárne kompozície na ich báze
WO1998053819A1 (fr) * 1997-05-29 1998-12-03 Mochida Pharmaceutical Co., Ltd. Agent therapeutique destine a traiter l'anerection
US6399618B1 (en) 1997-07-09 2002-06-04 Cardiome Pharma Corp Compositions and methods for modulating sexual activity
GB9722520D0 (en) 1997-10-24 1997-12-24 Pfizer Ltd Compounds
UA46166C2 (uk) 1997-11-12 2002-05-15 Баєр Акцієнгезельшафт 2-фенілзаміщені імідазотриазинони як інгібітори фосфодіестерази, спосіб їх одержання та лікарський засіб на їх основі
CN1134442C (zh) * 1998-04-20 2004-01-14 美国辉瑞有限公司 吡唑并嘧啶酮cGMP PDE5抑制剂、其制备方法及用途及中间体
CA2235642C (en) 1998-05-15 2007-11-13 Torcan Chemical Ltd. Processes for preparing sildenafil
CA2342830C (en) * 1998-09-04 2008-11-25 Ortho-Mcneil Pharmaceutical, Inc. 5-heterocyclyl pyrazolo[4,3-d]pyrimidin-7-ones for the treatment of male erectile dysfunction
GB9822238D0 (en) * 1998-10-12 1998-12-09 Pfizer Ltd Process for preparation of pyrazolo[4,3-D]pyrimidin-7-ones and intermediates thereof
GB9823101D0 (en) 1998-10-23 1998-12-16 Pfizer Ltd Pharmaceutically active compounds
GB9823103D0 (en) * 1998-10-23 1998-12-16 Pfizer Ltd Pharmaceutically active compounds
GB9823102D0 (en) 1998-10-23 1998-12-16 Pfizer Ltd Pharmaceutically active compounds
KR100353014B1 (ko) * 1998-11-11 2002-09-18 동아제약 주식회사 발기부전 치료에 효과를 갖는 피라졸로피리미디논 화합물
US6087362A (en) * 1999-03-16 2000-07-11 Pentech Pharmaceuticals, Inc. Apomorphine and sildenafil composition
AU5204800A (en) * 1999-06-21 2001-01-09 Biochemical Pharmaceutical Factory of Zhuhai Sez, The Process for preparing sildenafil, and troche which comprises sildenafil and apomorphine
CN1094492C (zh) * 1999-06-21 2002-11-20 杭州神鹰医药化工有限公司 西地那非的制备方法
CN1077108C (zh) * 1999-07-13 2002-01-02 成都地奥制药集团有限公司 用于制备药物昔多芬的前体化合物
AU1888800A (en) * 1999-09-13 2001-04-17 Cipla Limited A novel process for the synthesis of sildenafil citrate
US6075028A (en) * 1999-09-23 2000-06-13 Graham; Richard Method of treating Tourette's syndrome and related CNS disorders
TWI265925B (en) 1999-10-11 2006-11-11 Pfizer Pyrazolo[4,3-d]pyrimidin-7-ones useful in inhibiting type 5 cyclic guanosine 3',5'-monophosphate phosphodiesterases(cGMP PDE5), process and intermediates for their preparation, their uses and composition comprising them
AU7547900A (en) 1999-10-11 2001-04-23 Pfizer Inc. 5-(2-substituted-5-heterocyclylsulphonylpyrid-3-yl)- dihydropyrazolo(4,3-d)pyrimidin-7-ones as phosphodiesterase inhibitors
GB0015462D0 (en) * 2000-06-22 2000-08-16 Pfizer Ltd Novel process for the preparation of pyrazolopyrimidinones
US6667398B2 (en) 2000-06-22 2003-12-23 Pfizer Inc Process for the preparation of pyrazolopyrimidinones
ES2231498T3 (es) * 2000-06-22 2005-05-16 Pfizer Inc. Nuevo procedimiento para la preparacion de pirazolopirimidinonas.
US6730786B2 (en) 2000-06-22 2004-05-04 Pfizer Inc Process for the preparation of pyrazolopyrimidinones
US6407259B1 (en) 2000-07-28 2002-06-18 Pfizer Inc. Process for the preparation of pyrazoles
EP1176142A1 (en) * 2000-07-28 2002-01-30 Pfizer Inc. Process for the preparation of pyrazoles
YU51701A (sh) * 2000-07-28 2003-12-31 Pfizer Inc. Postupak za dobijanje jedinjenja pirazola/4,3-d/ pirimidin-7-ona i njihovih derivata
US6821978B2 (en) 2000-09-19 2004-11-23 Schering Corporation Xanthine phosphodiesterase V inhibitors
CN1127506C (zh) * 2001-06-29 2003-11-12 刘宝顺 一种治疗阳痿的新化合物
EP1421084B1 (en) * 2001-08-28 2008-05-14 Schering Corporation Polycyclic guanine phosphodiesterase v inhibitors
SI1509525T1 (sl) 2002-05-31 2006-12-31 Schering Corp Postopek priprave inhibitorjev ksantinske fosfodiesteraze V in njihovih prekurzorjev
DE10232113A1 (de) 2002-07-16 2004-01-29 Bayer Ag Vardenafil Hydrochlorid Trihydrat enthaltende Arzneimittel
CN100374441C (zh) 2003-06-06 2008-03-12 天津倍方科技发展有限公司 二氢吡咯[2，3-d]嘧啶-4-酮衍生物，其制备方法及其制药用途
CN100360531C (zh) * 2003-12-18 2008-01-09 中国人民解放军军事医学科学院放射与辐射医学研究所 用于预防或治疗阳萎和性冷淡的新吡唑并嘧啶类化合物
EP1779852A3 (en) * 2004-01-05 2007-05-09 Teva Pharmaceutical Industries Ltd. Processes for the production of sildenafil base and citrate salt
US7618976B2 (en) 2004-01-05 2009-11-17 Teva Pharmaceutical Industries Ltd Methods for the production of sildenafil base and citrate salt
DE102005009240A1 (de) 2005-03-01 2006-09-07 Bayer Healthcare Ag Arzneiformen mit verbesserten pharmakokinetischen Eigenschaften
CN101563348B (zh) * 2006-12-21 2011-08-24 上海特化医药科技有限公司 西地那非的制备方法及其中间体
ES2310144B1 (es) 2007-06-15 2010-01-12 Galenicum Health, S.L. Intermedios para la preparacion de un inhibidor de la fosfodiesterasa tipo 5.
US20110244050A1 (en) 2008-12-12 2011-10-06 Siegfried Rhein S.A. De C.V. Pulsed-release sildenafil composition and method for preparing said composition
MX2010006227A (es) 2010-06-07 2011-12-14 World Trade Imp Exp Wtie Ag Nuevos derivados 1,4-diazepanos, inhibidores de pde-5.
CN102993205B (zh) * 2012-12-27 2015-04-15 华润赛科药业有限责任公司 一种高收率制备高纯度西地那非游离碱的纯化方法
CN103044330B (zh) * 2013-01-14 2018-11-13 常州亚邦制药有限公司 西地那非中间体4-氨基-1-甲基-3-正丙基吡唑-5-甲酰胺的绿色合成新工艺
CN105085526B (zh) * 2014-05-15 2017-08-01 重庆圣华曦药业股份有限公司 一种改进的西地那非制备方法
CN105753870B (zh) * 2016-04-01 2018-05-22 重庆康刻尔制药有限公司 一种西地那非杂质f及其制备方法和应用
WO2017168174A1 (en) 2016-04-02 2017-10-05 N4 Pharma Uk Limited New pharmaceutical forms of sildenafil
CN105837578A (zh) * 2016-04-05 2016-08-10 重庆康刻尔制药有限公司 一种西地那非杂质d的合成方法
WO2018069316A2 (en) 2016-10-10 2018-04-19 Transgene Sa Immunotherapeutic product and mdsc modulator combination therapy
CN113493459B (zh) * 2020-04-07 2022-12-13 广州白云山医药集团股份有限公司白云山制药总厂 Pde5抑制剂化合物及其制备方法和应用
CN112961160A (zh) * 2021-03-05 2021-06-15 遂成药业股份有限公司 一种西地那非的改良合成工艺
CN113754612B (zh) * 2021-10-26 2023-09-26 山东安舜制药有限公司 一种西地那非中间体的制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4871843A (en) * 1983-10-18 1989-10-03 Dropic-Societe Civile De Gestion De Droits De Propriete Industrielle Cyclic benzenesulfonamides, process for their preparation and their use as active substance of pharmaceutical compositions
GB9013750D0 (en) * 1990-06-20 1990-08-08 Pfizer Ltd Therapeutic agents
GB9114760D0 (en) * 1991-07-09 1991-08-28 Pfizer Ltd Therapeutic agents
GB9311920D0 (en) * 1993-06-09 1993-07-28 Pfizer Ltd Therapeutic agents
SK285991B6 (sk) * 1997-04-25 2008-01-07 Pfizer Inc. Pyrazolopyrimidinóny, spôsob a medziprodukty na ich výrobu, ich použitie a farmaceutické a veterinárne kompozície na ich báze
US6087368A (en) * 1998-06-08 2000-07-11 Bristol-Myers Squibb Company Quinazolinone inhibitors of cGMP phosphodiesterase

Also Published As

Publication number Publication date
IN187320B (es) 2002-03-23
US5955611A (en) 1999-09-21
SK74397A3 (en) 1998-06-03
EP0916675A3 (en) 1999-07-14
IS6634A (is) 2002-11-25
IN187350B (es) 2002-03-30
ES2201397T3 (es) 2004-03-16
TR199700470A2 (xx) 1998-01-21
US6066735A (en) 2000-05-23
DK0916675T3 (da) 2003-10-27
NO972481D0 (no) 1997-05-30
CN1149206C (zh) 2004-05-12
HUP9701048A2 (hu) 1998-12-28
HK1033459A1 (en) 2001-08-31
CN1106399C (zh) 2003-04-23
PT916675E (pt) 2003-11-28
GB9612514D0 (en) 1996-08-14
IL121000A0 (en) 1997-11-20
JPH1081688A (ja) 1998-03-31
CZ290942B6 (cs) 2002-11-13
HRP970326B1 (en) 2000-10-31
NO304551B1 (no) 1999-01-11
UY24612A1 (es) 2000-09-29
SI0812845T1 (en) 1999-12-31
DE69723846D1 (de) 2003-09-04
EP0916675B1 (en) 2003-07-30
TNSN97102A1 (fr) 2005-03-15
AU2487897A (en) 1997-12-18
SK283895B6 (sk) 2004-04-06
UA27085C2 (uk) 2000-02-28
SA97180124A (ar) 2005-12-03
EP0812845B1 (en) 1999-07-14
BG101569A (en) 1998-01-30
EA199700061A1 (ru) 1997-12-30
SA97180124B1 (ar) 2006-02-08
BR9703580A (pt) 1998-11-10
AP9701009A0 (en) 1997-07-31
UY24585A1 (es) 1997-12-02
DE69723846T2 (de) 2004-03-04
IL125411A0 (en) 1999-03-12
OA10426A (en) 2001-12-07
IS4503A (is) 1997-12-15
JP3058863B2 (ja) 2000-07-04
HU224497B1 (hu) 2005-10-28
CN1168376A (zh) 1997-12-24
PL189333B1 (pl) 2005-07-29
NO306115B1 (no) 1999-09-20
DZ2247A1 (fr) 2002-12-18
CZ181197A3 (cs) 1998-03-18
SG50024A1 (en) 1998-06-15
ATE182150T1 (de) 1999-07-15
SK283893B6 (sk) 2004-04-06
EP0812845A1 (en) 1997-12-17
NO972481L (no) 1997-12-15
DE69700321T2 (de) 1999-11-04
EP0916675A2 (en) 1999-05-19
IN187317B (es) 2002-03-23
YU25497A (sh) 1998-12-23
MA24205A1 (fr) 1997-12-31
RS49653B (sr) 2007-09-21
PL320555A1 (en) 1997-12-22
CO4780028A1 (es) 1999-05-26
IS1923B (is) 2004-03-15
IL125411A (en) 2000-02-29
IS1922B (is) 2004-03-15
SK283894B6 (sk) 2004-04-06
JP2866841B2 (ja) 1999-03-08
SK283896B6 (sk) 2004-04-06
IN187318B (es) 2002-03-23
EA000102B1 (ru) 1998-08-27
RS20060484A (en) 2007-04-10
AP717A (en) 1999-01-04
KR100207352B1 (en) 1999-07-15
PE1299A1 (es) 1999-01-13
MX9704433A (es) 1998-11-30
HN1997000072A (es) 1997-12-26
NO985064L (no) 1997-12-15
CN1282740A (zh) 2001-02-07
SI0916675T1 (en) 2003-12-31
AR003401A1 (es) 1998-08-05
KR980002051A (ko) 1998-03-30
HRP970326A2 (en) 1998-06-30
CA2207694C (en) 1999-11-23
PE20011303A1 (es) 2001-12-25
ATE246194T1 (de) 2003-08-15
NO985064D0 (no) 1998-10-30
AU697684B2 (en) 1998-10-15
ID18745A (id) 1998-05-07
IL121000A (en) 2000-02-29
IN187319B (es) 2002-03-23
HUP9701048A3 (en) 2000-10-30
HU9701048D0 (en) 1997-08-28
ES2134051T3 (es) 1999-09-16
GR3031087T3 (en) 1999-12-31
DE69700321D1 (de) 1999-08-19
RS49924B (sr) 2008-09-29
SK283897B6 (sk) 2004-04-06
NZ328084A (en) 1998-08-26
CA2207694A1 (en) 1997-12-14
BG62554B1 (bg) 2000-02-29
ZA975259B (en) 1997-12-15
JPH11171879A (ja) 1999-06-29
DK0812845T3 (da) 1999-11-29

Similar Documents

Publication Publication Date Title
KR100207352B1 (en) Process for preparing sildenafil
HUP9902419A3 (en) Process for preparing nitrobiphenylene
IL129761A0 (en) Method for preparing cyclopropylamines
IL134059A0 (en) Process for preparing aminoarylacetylenes
HUP9904325A3 (en) Process for johexol manufacture
IL122454A0 (en) Process for forming bubble-pack
EG23935A (en) Process for preparing eprosartin
EG22077A (en) Process for preparing 4-substituted-ih-indole-3 glyoxamides
IL126668A0 (en) Improved process for preparing ionones especially beta-ionones
GB2317178B (en) Process for preparing 1-chloromethylsilatrane
IL126184A0 (en) Process for preparing pentafluoropentanol
HUP0002522A3 (en) Process for making benzisothiazolin-3-ones
HUP9904112A3 (en) Process for preparing amidines
IL133288A (en) Process for preparing 3-isochromanone
IL125646A (en) Process for preparing N-pyruvyl-L-proline
SI0888261T1 (en) Process for preparing nitrobiphenylene
GB9602856D0 (en) Process for preparing 4-tert-butyloxycarbonyl-(s) piperazine-2-tert-butylcarboxamide
FI102608B1 (fi) Menetelmä alkoholien valmistamiseksi
IL130950A0 (en) Process for preparing carboxamido-4- azasteroids
ZA987025B (en) Process for preparing 1-pyruvyl-L-proline
SG42360A1 (en) Process for the preparation of -caprolactam
HUP9903883A3 (en) Method for preparing trimethylbenzoquinone
HUP9903692A3 (en) Process for making dihydropyrimidinones
HUT71905A (en) Process for preparing 6-fluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylate-3,4-boron-diacetates