New lactone (Z)-5-ethylidene-4-(4'-methoxyphenyl)-dihydrofuran-2-one lactone and the new cis-4-(4'-methoxyphenyl)-5-vinyl-dihydrofuran-2-one and the method they are simultaneously co-receiving

摘要

the invention relates to beta - (4 'metoksyfenylo) -? - lactones, model 1 and 2 and the way their co production by chemical reactions from the dehydrohalogenacji cis - 5 - (1 - jodoetylo) - 4 - (4 '- metoksyfenylo) - dihydrofuran-2 - hydrochloride or cis - 5 - (1-bromoethyl) - 4 - (4' - metoksyfenylo) - dihydrofuran-2 - one with the participation of 1,8 - diazabicyklo [5. 4.0] undec - 7 - ide (dbu).is a mixture of two products which are separated by column chromatography with (z) - 5 - ethylidene - 4 - (4 '- metoksyfenylo) - dihydrofuran-2 -, formula 1, and cis - (4 - (4' - metoksyfenylo) - 5 - vinyl - dihydrofuran-2 - he, model 2.