SEARCH Articles Figures Tables 2- Methyl-2-butenoic acid preparation 3- Methyl-2-butenoic acid 3-Butenoic acid, 2- -, methyl ester 3-Methyl-4-phenyl-3-butenoic Cis-2-Methyl-2-butenoic acid Diastereoselectivity 2-methyl-2-butenoic acid Ethyl 4-bromo-3-methyl-2-butenoate Methyl -3-acetylamino-2-butenoate Methyl 3-trimethylsiloxy-2-butenoate Methyl-2,3-dimethyl-2-butenoate Methyl-trans-2-butenoate