potassium tert-butylate
1) THF, -78 deg C 2) -78 deg C -> room temperature; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;
参考文献
De Cusati, Paul F.; Olofson
Tetrahedron Letters, 1990 , vol. 31, # 10 p. 1405 - 1408