N-hetarylethylenes; 1; Synthesis and isomerization of 10-allyland 10-propenylphenoxazines; Chemistry of Heterocyclic Compounds; Vol. 24, iss. 12
| Parent link: | Chemistry of Heterocyclic Compounds Vol. 24, iss. 12.— 1988.— [P. 1384-1387] |
|---|---|
| Altri autori: | , , , |
| Riassunto: | Title screen Alkylation of phenoxazine with allyl bromide has given 10-allylphenoxazine. The prototropic isomerization of 10-allylphenoxazine in DMSO on treatment with t-BuOK, KOH, and NaOH has been examined. At elevated temperatures, mixtures of cis- and trans-10-propenylphenoxazines are formed, but at room temperature in the presence of t-BuOK isomerization proceeds stereoselectively to give cis-10-propenylphenoxazine. The influence of temperature and reaction times on the isomeric composition of the 10-propenylphenoxazines has been studied. The cis-propenylphenoxazine obtained in the kinetically controlled reaction isomerizes under the reaction conditions to the equilibrium mixture of cis- and transisomers of 10-propenylphenoxazineю. Режим доступа: по договору с организацией-держателем ресурса |
| Lingua: | inglese |
| Pubblicazione: |
1988
|
| Soggetti: | |
| Accesso online: | http://dx.doi.org/10.1007/BF00486685 |
| Natura: | Elettronico Capitolo di libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=653700 |
| Riassunto: | Title screen Alkylation of phenoxazine with allyl bromide has given 10-allylphenoxazine. The prototropic isomerization of 10-allylphenoxazine in DMSO on treatment with t-BuOK, KOH, and NaOH has been examined. At elevated temperatures, mixtures of cis- and trans-10-propenylphenoxazines are formed, but at room temperature in the presence of t-BuOK isomerization proceeds stereoselectively to give cis-10-propenylphenoxazine. The influence of temperature and reaction times on the isomeric composition of the 10-propenylphenoxazines has been studied. The cis-propenylphenoxazine obtained in the kinetically controlled reaction isomerizes under the reaction conditions to the equilibrium mixture of cis- and transisomers of 10-propenylphenoxazineю. Режим доступа: по договору с организацией-держателем ресурса |
|---|---|
| DOI: | 10.1007/BF00486685 |