Synthesis of a set of isomeric 2,4,6-triarylmorpholines and 2,6-diaryloxathianes from the corresponding 1,5-diols has been described. The method provides an efficient route to six-membered heterocycles from acyclic diols and is found to be better than Mitsunobu procedure in yield and waste management. In a related study, the ring contraction of pyranone to two isomeric cyclopentenone derivatives through
Synthesis of β -Dihydroxysulfides by Cleavage of Epoxides Using Quaternized Amino-Functionalized Cross-Linked Polyacrylamide as a New Polymeric Phase Transfer Catalyst
作者:H. Mahdavi、B. Tamami
DOI:10.1080/104265090902651
日期:2005.8.1
Poly[N-(2-aminoethyl)acrylamido]trimethyl ammonium halide resin was developed as a new solid-liquid phase transfer catalyst. This quaternized polyacrylamide catalyzed regioselective ring opening of epoxide by Na 2 S to obtain bis[β -hydroxy-alkyl]sulfide in high yield under mild conditions.
聚[N-(2-氨基乙基)丙烯酰胺基]三甲基卤化铵树脂是一种新型固液相转移催化剂。这种季铵化聚丙烯酰胺通过 Na 2 S 催化环氧化物的区域选择性开环,在温和条件下以高收率获得双[β-羟基-烷基]硫化物。
Simple and highly efficient catalyst- and waste-free ring opening of epoxides with Na2S in water
作者:Najmedin Azizi、Elham Akbari、Frough Ebrahimi、Mohammad R. Saidi
DOI:10.1007/s00706-010-0261-0
日期:2010.3
Water was found to be a highly efficient and green catalyst and solvent for ring-opening reaction of epoxides with Na2S at room temperature to give substituted bis(hydroxyethyl)thioethers in high yields.
Triphenylsilanethiol: A solid H2S equivalent in the ring opening of epoxides
作者:John Brittain、Yves Gareau
DOI:10.1016/s0040-4039(00)79156-8
日期:1993.5
Triphenylsilanethiol, a white crystalline solid, can be used in the opening of epoxides to form 8-hydroxymercaptans or beta-dihydroxysulfides.
BIS-AROMATIC ANTICANCER AGENTS
申请人:Safavy Ahmad
公开号:US20110054037A1
公开(公告)日:2011-03-03
Treatment of cancer includes administering a compound of formula (I) to a subject. In particular, treatment of colorectal cancer is described.