专利号:US-11078178-B2 优先权日:2017-09-04 标 题 :6-chromanol derivatives and their synthesis 发明人:BEUMER RAPHAEL; BONRATH WERNER; DELPHO JAN-MARC; JORAY MARCEL; MEDLOCK JONATHAN ALAN; NETSCHER THOMAS; SORIANO DOMENICO; STEMMLER RENÉ TOBIAS 权利人:DSM IP ASSETS BV 摘要:The present invention relates to novel compounds which are particularly useful for the synthesis of novel chromanol derivatives. These compounds have interesting properties. Particularly, the novel chromanol derivatives have interesting antioxidant properties as well as flavours and fragrances.
专利号:US-9938228-B2 优先权日:2014-09-09 标题:Process for the preparation of spiro[2.5]octane-5,7-dione and spiro[3.5]nonane-6,8-dione 发明人:JIN XIANGLE; DONG WEITONG; FU YAN; LU JUN; XIE LE; XU WEI; YANG JINSONG; ZHU QIAN 权利人:BOEHRINGER INGELHEIM INT 摘要:This invention relates to methods for the synthesis of spiro[2.5]octane-5,7-dione and spiro[3.5]nonane-6,8-dione which are useful as intermediates in the manufacture of pharmaceutically active ingredients.
专利号:US-4536334-A 优先权日:1979-06-28 标题 :Preparation of β-lactam derivatives 发明人:SUNAGAWA MAKOTO; MATSUMURA HARUKI; INOUE TAKAAKI; HIROHASHI TOSHIYUKI 权利人:SUMITOMO CHEMICAL CO 摘要:A process for preparing a β-lactam derivative having a hydrogen atom on the nitrogen atom of the β-lactam ring, which comprises reacting a β-lactam derivative having a mono- or diarylmethyl group on the nitrogen atom of the β-lactam ring with an acid or ceric ammonium nitrate to cleave the bond between the nitrogen atom and the mono- or diarylmethyl group; and novel β-lactam derivatives useful as intermediates for the synthesis of pharmaceutical agents.
专利号:US-3424799-A 优先权日:1966-04-01 标 题:General synthesis of diketophosphoranes and acetylenic ketones 发明人:CHOPARD PIERRE-ANTOINE; SEARLE ROBERT J G 权利人:AMERICAN CYANAMID CO
专利号:EP-0872466-A1 优先权日:1997-04-18 标题 :Process for the synthesis of 1,7-diaryl or 1,7-heteroarylheptan-4-ols and synthetic intermediates
专利号:DE-2711008-A1 优先权日:1977-03-14 标题 :2-OXO-ALKANYLIDEN-TRIARYLPHOSPHORANES, PROCESS FOR THEIR PRODUCTION AND THEIR USE FOR THE SYNTHESIS OF NEW PROSTAGLANDIN ANALOGS
[参考文献]: Martin A Lovchik, Et Al. Cyclobutanones Through Sni' Ring Closure, A Mechanistic Study. J Org Chem. 2007 Mar 30;72(7):2427-33.
合成参考文献
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