1172603-68-7Relevant articles and documents
One-pot three-component synthesis of 2-(alkylimino)-7-oxo-1-oxa-6- azaspiro[4.4]nona-3,8-diene-3,4-dicarboxylates
Adib, Mehdi,Moghimi, Setareh,Sayahi, Mohammad Hosein,Bijanzadeh, Hamid Reza
experimental part, p. 944 - 949 (2009/08/14)
The reactive zwitterionic 1:1 intermediate 6 generated in situ from the reaction between an isocyanide 2 and a dialkyl acetylenedicarboxylate (=dialkyl but-2-ynedioate) 3 was trapped by an N-arylmaleimide or -phthalimide 4 to produce a highly functionaliz