A new route to silyl-substituted cyclobutenones and silylketenes

作者：Benda Konstantin; Knoth Tanja; Danheiser Rick L; Schaumann Ernst^*

来源：Tetrahedron Letters, 2011, 52(1): 46-48.

DOI：10.1016/j.tetlet.2010.10.130

• Silyl anions
• Cyclobutenones
• Silylketenes
• Cyclopentenones
• Cycloaddition reactions

2-Silyl-cyclobutene(di)ones are obtained by an addition/substitution approach on dimethyl squarate using silyl anions. The acetal and in particular the thioacetal derivatives readily undergo electrocyclic ring opening to reactive silyl(vinyl)ketenes.

• 出版日期2011-1-5