sodium ethanolate 1) heating (byproduct removal), 2) heating (to distill); further catalysts; method for preparation of 1-oxo-2-sila-2,2-disubstituted cycloheptanes and cyclooctanes;

sodium ethanolate 1) heating (byproduct removal), 2) heating (to distill); further catalysts; method for preparation of 1-oxo-2-sila-2,2-disubstituted cycloheptanes and cyclooctanes;