1,4-二氯酞嗪 、 奎宁 在
base 作用下,
以
甲苯 为溶剂,
以62%的产率得到1-chloro-4-[(R)-[(2S,4S,5R)-5-ethenyl-1-azabicyclo[2.2.2]octan-2-yl]-(6-methoxyquinolin-4-yl)methoxy]phthalazine
参考文献:
名称:
Synthesis and catalytic activity of TentaGel-supported asymmetric dihydroxylation (DHQ)2PHAL ligand
摘要:
An efficient scheme for the synthesis and catalytic activity of TentaGel-supported Sharpless's (DHQ)(2)PHAL dihydroxylation ligand is described. Crown Copyright (C) 2008 Published by Elsevier Ltd. All rights reserved.
Two facile accesses to mono-cinchona alkaloid-derived ligands, by conventional heating conditions and solvent-free microwave irradiation, are described. 1,4-Dichlorophthalazine (PHAL) or 3,6-dichloropyridazine (PYDZ) reacted with quinine (QN), cinchonine (CN), or cinchonidine (CND) by using CaH2 as acid-bonding reagent in DMF at 90-100C to provide mono-cinchona alkaloid-derived ligands 2a-f (87-95%) in 1.5h. However, the coupling reactions were performed under solvent-free microwave conditions to yield 2a-f (64-89%) within 15min.
Synthesis and catalytic activity of TentaGel-supported asymmetric dihydroxylation (DHQ)2PHAL ligand
作者:Jihane Achkar、Joseph R. Hunt、Rachel L. Beingessner、Hicham Fenniri
DOI:10.1016/j.tetasy.2008.04.007
日期:2008.5
An efficient scheme for the synthesis and catalytic activity of TentaGel-supported Sharpless's (DHQ)(2)PHAL dihydroxylation ligand is described. Crown Copyright (C) 2008 Published by Elsevier Ltd. All rights reserved.