136411-07-9Relevant articles and documents
Cycloaddition von Benzothiet an Oxime, Oximether and Oximester
Meier, Herbert,Saul, Klaus,Mengel, Rudolf,Niedermann, Hans-Peter
, p. 843 - 848 (2007/10/02)
Benzothiete 1 generates by thermal ring opening an 8? electron system 2 which undergoes cycloaddition reactions with the oxime systems 3a-g.In accordance with the FMO theory the 1,3-thiazine derivatives 4a-g are formed in a regiospecific and 4f additionally in a stereospecific manner.The O-acylated adducts 4h-j enter the same cycloaddition; however, an elimination reaction 4 -> 5, 6 can provoke the addition of a second benzothiete, yielding the tetracyclic compounds 7j, and 8i,j.