Record number :
1637767
Title of article :
Studies of chemoselectivity in Diels–Alder reactions of 2-(p-tolylsulfinyl)-1,4-benzoquinone and styrenes: formation of (p-tolylsulfinyl)-1,4-phenanthrenequinones
Author/Authors :
Carreٌo، نويسنده , , M.Carmen and Urbano، نويسنده , , Antonio، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2000
Pages :
5
From page :
4117
To page :
4121
Abstract :
Diels–Alder reactions of 2-(p-tolylsulfinyl)-1,4-benzoquinone 1 with 4-methoxystyrenes 2a–b in polar solvents afforded 2- and 3-(p-tolylsulfinyl)-1,4-phenanthrenequinones 4a–b and 5a–b as major compounds. A second cycloaddition of 5a and 4a with 3,4-dimethoxystyrene 2a gave access to C- and S-shaped pentacyclic molecules 10 and 11 in a highly regioselective way.
Keywords :
Cycloadditions , quinones , sulfoxides , Chemoselectivity
Journal title :
Tetrahedron Letters
Serial Year :
2000
Link To Document :
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