A New Route to Silyl-substituted Cyclobutenones and Silylketenes.
نویسندگان
چکیده
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.
منابع مشابه
Synthesis of highly substituted allenylsilanes by alkylidenation of silylketenes
BACKGROUND Allenylsilanes are useful intermediates in organic synthesis. An attractive, convergent but little used approach for their synthesis is the alkylidenation of stable silylketenes. Reactions thus far have been limited to the use of unsubstituted silylketenes (or equivalents) with stabilised or semi-stabilised ylides only. The current study explores the reactions of substituted ketenes ...
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ورودعنوان ژورنال:
- Tetrahedron letters
دوره 52 1 شماره
صفحات -
تاریخ انتشار 2011