121829-41-2Relevant academic research and scientific papers
SYN-ANTI SELECTIVITY OF CIS-3,4-DISUBSTITUTED CYCLOBUTENES Part 3: Chloro-thio- and Dithio-substituted Cyclobutenes
Landen, Harald,Margraf, Birgit,Martin, Hans-Dieter,Steigel, Alois
, p. 6597 - 6600 (2007/10/02)
Cycloaddicions of the 3.4-substituted cyclobutenes L, M with diazoalkanes RR'CN2, R = H and R' = H, alkyl, aryl or alkoxycarbonyl excusively yield syn-adducts.Diphenyl-nitrilimine and mesitonitrile oxide mainly undergo anti-addition.
