Formation of Benzooxaphosphole Oxide Heterocyclic System by the Ring-Contractive Arbuzov-Michaelis Isomerization of Alkoxy-Substituted Benzodioxaphosphorins
摘要:
A possibility of the Arbuzov-Michaelis-type isomerization is revealed for the model 2-ethoxy derivative 4 of the six-membered 4H-benzo[1,3,2]dioxaphosphorin heterocycle. The reaction proceeds with ring contraction to give the five-membered 3H-benzo[d][1,2]oxaphosphole 2-oxide heterocyclic system. Some synthetic possibilities of the new reaction disclosed here are demonstrated by introducing a pharmacophoric 5-O-nucleoside to the P(IV) atom leading to the 3H-benzo[d][1,2]oxaphosphole 2-oxide system by this new rearrangement reaction.
Formation of Benzooxaphosphole Oxide Heterocyclic System by the Ring-Contractive Arbuzov-Michaelis Isomerization of Alkoxy-Substituted Benzodioxaphosphorins
摘要:
A possibility of the Arbuzov-Michaelis-type isomerization is revealed for the model 2-ethoxy derivative 4 of the six-membered 4H-benzo[1,3,2]dioxaphosphorin heterocycle. The reaction proceeds with ring contraction to give the five-membered 3H-benzo[d][1,2]oxaphosphole 2-oxide heterocyclic system. Some synthetic possibilities of the new reaction disclosed here are demonstrated by introducing a pharmacophoric 5-O-nucleoside to the P(IV) atom leading to the 3H-benzo[d][1,2]oxaphosphole 2-oxide system by this new rearrangement reaction.
Formation of Benzooxaphosphole Oxide Heterocyclic System by the Ring-Contractive Arbuzov-Michaelis Isomerization of Alkoxy-Substituted Benzodioxaphosphorins
作者:Eduard E. Nifantiev、Svetlana B. Khrebtova、Yulia V. Kulikova、Dmitrii A. Predvoditelv、Tat′yana S. Kukhareva、Pavel V. Petrovskii、Mirjam Rose、Chris Meier
DOI:10.1080/10426500210234
日期:2002.1.1
A possibility of the Arbuzov-Michaelis-type isomerization is revealed for the model 2-ethoxy derivative 4 of the six-membered 4H-benzo[1,3,2]dioxaphosphorin heterocycle. The reaction proceeds with ring contraction to give the five-membered 3H-benzo[d][1,2]oxaphosphole 2-oxide heterocyclic system. Some synthetic possibilities of the new reaction disclosed here are demonstrated by introducing a pharmacophoric 5-O-nucleoside to the P(IV) atom leading to the 3H-benzo[d][1,2]oxaphosphole 2-oxide system by this new rearrangement reaction.