- Cycloaddition Reaction of 2,3-Disubstituted Oxiranes with Isocyanates by Highly Activated Catalyst; Ph4SbI-Bu3SnI
-
The combination of Ph4SbI and Bu3SnI proved to be a new excellent catalyst for effecting cycloaddition reaction of inactive 2,3-disubstituted oxiranes with isocyanatea under neutral conditions, yielding oxazolidinones in high yields, while either of both
- Fujiwara, Masahiro,Baba, Akio,Tomohisa, Yuri,Matsuda, Haruo
-
p. 1963 - 1966
(2007/10/02)
-
- Reaction of Chlorosulfonyl Isocyanate with Aziridines
-
The reaction of chlorosulfonyl isocyanate (CSI) with 1,2,3-triphenylaziridine (1) and some cis- and trans-1-cyclohexyl-2-aroyl-3-phenylaziridines, 4-7 and 19-22 has been described.The cis-isomers of aziridines, 4-7, undergo a smooth reaction with CSI to give the corresponding cis-isomers of 2-chlorosulfonylimino-1,3-oxazolidines, 8-11, in good yields (65-67percent).While the trans-isomers, 19-22, gave unusal products 23-26 which have been assigned a bicylic structure, based on their physical and spectral (ir,pmr,ms) data.Plausible mechnisms have been postullated to explain the transformations.
- Murthy, K. S. Keshava,Dhar, D. N.
-
p. 1699 - 1704
(2007/10/02)
-
- REACTIONS OF N-PHENYL-β-AMINOALCOHOLS WITH ACETYLENIC ESTERS
-
erythro-1,2-Diphenyl-2-phenylaminoetanol 1 reacted with dimethyl acetylenedicarboxylate (DMAD) in refluxing benzene to give the cis-Michael adduct, whereas the same reaction in methanol at room temperature afforded a mixture of the Michael adduct and tetr
- Tsuge, Otohiko,Oe, Koji,Ohnishi, Toshiyuki
-
p. 1609 - 1614
(2007/10/02)
-