Conjugate addition reaction of various nucleophiles across the vinyl group of 2-chloro-4-vinylpyrimidine. 2-chloro-4-(1-phenylvinyl)pyrimidine and 2-chloro-4-vinylquinazoline provides the corresponding 2-chloro-4-(2-substituted ethyl)pyrimidines and 2-chloro-4-(2-substituted ethyl)quinazolines. Treatment of these products. without isolation. https://www.foldlyers.shop/product-category/classical-hard-tension/