aromatic nitriles can be prepared in this manner with moderate to excellent yields. The reaction mechanisms were obtained with high-level quantum chemical calculations, and the crucial role the anionic ligand plays in the transformations were revealed.
Novel heteroatom containing tetracyclic derivatives as selective estrogen receptor modulators
申请人:——
公开号:US20030216463A1
公开(公告)日:2003-11-20
The present invention is directed to novel heteroatom containing tetracyclic derivatives, pharmaceutical compositions containing them, their use in the treatment and/or prevention of disorders mediated by one or more estrogen receptors and processes for their preparation. The compounds of the invention are useful in the treatment and/or prevention of disorders associated with the depletion of estrogen such as hot flashes, vaginal dryness, osteopenia and osteoporosis; hormone sensitive cancers and hyperplasia of the breast, endometrium, cervix and prostate; endometriosis, uterine fibroids, osteoarthritis and as contraceptive agents, alone or in combination with a progestogen or progestogen antagonist.
Expedient synthesis of benzimidazoles using amides
作者:Pramod P. Kattimani、Ravindra R. Kamble、Gangadhar Y. Meti
DOI:10.1039/c5ra00021a
日期:——
In the present report an efficient, rapid, facile and inexpensive route for the synthesis of benzimidazoles using 1,2-arylenediamines and amides in acidic medium under thermal/microwave conditions is developed.
[EN] PROCESS FOR PRODUCING N-METHYL SUCCINIMIDE<br/>[FR] PROCEDE DE PRODUCTION DE N-METHYLE SUCCINIMIDE
申请人:BATTELLE MEMORIAL INSTITUTE
公开号:WO2004058708A1
公开(公告)日:2004-07-15
The invention includes methods of processing an initial di-carbonyl compound by conversion to a cyclic compound. The cyclic compound is reacted with an alkyating agent to form a derivative having an alkylated ring nitrogen. The invention encompasses a method of producing an N-alkyl product. Amonia content of a solution is adjusted to produce a ratio of ammonia to di-carboxylate compound of from about 1:1 to about 1.5:1. An alkylating agent is added and the initial compound is alkylated and cyclized. The invention includes methods of making N-methyl pyrrolidinone (NMP). Aqueous ammonia and succinate is introduced into a vessel and ammonia is adjusted to provide a ratio of ammonia to succinate of less than 2:1. A methylating agent is reacted with succinate at a temperature of from greater than 100 °C to about 400 °C to produce N-methyl succinimide which is purified and hydrogenated to form NMP.