MoO2Cl2(dmf)2-Catalyzed Domino Reactions of ω-Nitro Alkenes to 3,4-Dihydro-2H-1,4-benzothiazines and Other Heterocycles
作者:Uwe Beifuss、Chandi Malakar、Elena Merisor、Jürgen Conrad
DOI:10.1055/s-0030-1258119
日期:2010.7
Using the transformation of allyl 2-nitrophenyl thioethers to 3,4-dihydro-2H-1,4-benzothiazines as an example the reductive cyclization of Ï-nitroalkenes to saturated N-heterocycles can be performed highly selective and with high yields if a combination of MoO2Cl2(dmf)2 as a catalyst and Ph3P as reducing agent are employed.
以烯丙基 2-硝基苯基硫醚转化为 3,4-二氢-2H-1,4-苯并噻嗪为例,如果同时使用 MoO2Cl2(dmf)2 作为催化剂和 Ph3P 作为还原剂,则可以高选择性、高收率地实现 β-硝基烯烃向饱和 N-杂环的还原环化。