Ruthenium catalyzed selective synthesis of enol carbamates by fixation of carbon dioxide
作者:Take-aki Mitsudo、Yoji Hori、Yasushi Yamakawa、Yoshihisa Watanabe
DOI:10.1016/s0040-4039(00)96526-2
日期:1987.1
react with carbon dioxide and terminal alkynes in the presence of a catalytic amount of 4-1,5-cyclooctadiene) (6-1,3,5-cyclooctatriene)ruthenium [Ru(COD)(COT)] and tertiary phosphine in toluene to give enol carbamates in good yields with high regio- and stereoselectivity. Cyclic enol carbamates, 5-methylene-2-oxazolidinones are obtained from N-substituted propargylamines and carbon dioxide in high yields
在催化量的4-1,5-环辛二烯)(6-1,3,5-环辛三烯)钌[Ru(COD)(COT)]和叔膦存在下,仲胺与二氧化碳和末端炔烃反应甲苯以高收率和高区域选择性和立体选择性得到烯醇氨基甲酸酯。从N-取代的炔丙基胺和二氧化碳以高收率获得环状烯醇氨基甲酸酯,5-亚甲基-2-恶唑烷酮。