A Novel Trimerization of 1-Phenylsulfanyl-2,2,2-trifluoroethyl Isocyanide Giving a Dihydropyrimidine Derivative
作者:Hidemitsu Uno、Kenji Oka、Hiroyuki Tani、Yoshihiro Kawada、Noboru Ono
DOI:10.1246/bcsj.69.1763
日期:1996.6
1-Phenylsulfanyl-2,2,2-trifluoroethyl isocyanide (2a) readily and selectively trimerized to 4,6-bis(phenylsulfanyl)-1-(1-phenylsulfanyl-2,2,2-trifluoroethyl)-5-(2,2,2-trifluoroethylideneamino)-2-trifluoromethyl-1,2-dihydropyrimidine (5) at room temperature, while other α-phenylsulfanyl isocyanides such as phenyl(phenylsulfanyl)methyl isocyanide (2b) are stable. Heating of 2b resulted in formation of the corresponding nitrile as well as diphenyl disulfide and [bis(phenylsulfanyl)methyl]benzene.
在室温下,1-苯硫基-2,2,2-三氟乙基异氰酸酯(2a)很容易选择性地三聚成 4,6-双(苯硫基)-1-(1-苯硫基-2,2,2-三氟乙基)-5-(2,2、在室温下,4,6-双(苯硫基)-1-(1-苯硫基-2,2,2-三氟乙基)-5-(2,2,2-三氟亚乙基氨基)-2-三氟甲基-1,2-二氢嘧啶(5)稳定,而其他α-苯硫基异氰酸酯,如苯基(苯硫基)甲基异氰酸酯(2b)稳定。加热 2b 会生成相应的腈以及二苯基二硫醚和[双(苯硫基)甲基]苯。