A synthon for C2polycyclic 1,4,5,8-tetrahydronaphthalenes via double Diels–Alder cycloaddition
摘要:
2-Chloro-1,4-benzodithiin-S,S'-tetroxide 1 is a synthon for C2 because its Diels-Alder adducts, after dehydrochlorination, react further with another molecule of diene and the resulting product can be desulfonylated into the same hydrocarbons that would have formed from C2.
A synthon for C<sub>2</sub>polycyclic 1,4,5,8-tetrahydronaphthalenes via double Diels–Alder cycloaddition
作者:Ottorino De Lucchi、Sergio Cossu
DOI:10.1039/c39920001089
日期:——
2-Chloro-1,4-benzodithiin-S,S'-tetroxide 1 is a synthon for C2 because its Diels-Alder adducts, after dehydrochlorination, react further with another molecule of diene and the resulting product can be desulfonylated into the same hydrocarbons that would have formed from C2.
A mild alternative to the use of benzyne in [4+2]-cycloaddition reactions
作者:Sergio Cossu、Ottorino De Lucchi
DOI:10.1016/0040-4020(96)00877-0
日期:1996.11
A synthetic protocol to assemble a benzene ring, mimicking the [4+2]-cycloaddition of benzyne is reported. The sequence of reactions is made up of simple and mild steps and overall it furnishes comparable or even better yields with respect to the direct addition of benzyne.