A simple and efficient palladium-catalyzed intramolecular carbonylativesynthesis of isocoumarins and phthalides from the easily available starting materials by employing phenylformate as a CO surrogate has been achieved. The approach affords target compounds in good to excellent yields with the advantages of lower toxicity, milder conditions, easy operation and wide functional group tolerance.
Palladium-Catalyzed Synthesis of Isocoumarins and Phthalides via <i>tert</i>-Butyl Isocyanide Insertion
作者:Xiang-Dong Fei、Zhi-Yuan Ge、Ting Tang、Yong-Ming Zhu、Shun-Jun Ji
DOI:10.1021/jo302004u
日期:2012.11.16
efficient strategy for the synthesis of isocoumarins and phthalides through a palladium(0)-catalyzed reaction incorporating tert-butyl isocyanide has been developed. This process, providing one of the simplest methods for the synthesis of this class of valuable lactones, involves two steps including cyclization reaction and simple acid hydrolysis. The methodology is tolerant of a wide range of substrates
Compounds of formula I:
are antagonists of the human 5-HT
2A
receptor, and hence useful in treatment or prevention of a variety of neurological conditions.
式I的化合物:是人类5-HT2A受体的拮抗剂,因此在治疗或预防各种神经系统疾病方面很有用。
5-HT2A receptor ligands
申请人:Merk Sharp & Dohme Ltd.
公开号:US07094777B2
公开(公告)日:2006-08-22
Compounds of formula I:
are antagonists of the human 5-HT2A receptor, and hence useful in treatment or prevention of a variety of neurological conditions.
化学式为I的化合物是人类5-HT2A受体的拮抗剂,因此在治疗或预防各种神经系统疾病方面非常有用。
NOVEL 1, 3-DISUBSTITUTED AZETIDINE DERIVATIVES FOR USE AS 5HT2A RECEPTOR LIGANDS