title: Dependence of the rate, reversibility, and stereoselectivity of 17-keto steroid alkynylation on the alkyne and on the alkali metal.
mesh_terms: D000468:Alkalies; D000480:Alkynes; D055598:Chemical Phenomena; D002621:Chemistry; D004970:Estrone; D004988:Ethers, Cyclic
chemical_list: D000468:Alkalies; D000480:Alkynes; D004988:Ethers, Cyclic; D004970:Estrone