Regioselectivity and stereoselectivity of electrophilic quaternization of substituted 2-allyl(2-cyclohexen-1-yl)thionicotinic acids to thiazolo[3,2-a]pyridinium salts
Regioselectivity and stereoselectivity of electrophilic quaternization of substituted 2-allyl(2-cyclohexen-1-yl)thionicotinic acids to thiazolo[3,2-a]pyridinium salts