Reactions of 3,5-di(tert-butyl)-1,2-benzoquinone with terminal acetylenes in the presence of phosphorus trichloride. ipso-Substitution of the tert-butyl group
作者:V. F. Mironov、A. V. Bogdanov、A. V. Nemtarev、A. A. Shtyrlina、E. N. Varaksina、V. K. Cherkasov、A. B. Dobrynin、D. B. Krivolapov、R. Z. Musin、I. A. Litvinov、A. I. Konovalov
DOI:10.1007/s11172-007-0292-9
日期:2007.9
The reactions of 3,5-di(tert-butyl)-1,2-benzoquinone with aryl-and alkylacetylenes in the presence of phosphorus trichloride afford 4-aryl(alkyl)-8-tert-butyl-2,6-dichloro-2-oxo-2H-benzo[e][1,2]oxaphosphinines as the major ipso-substitution products of the tert-butyl group by the chlorine atom. 4-Aryl(alkyl)-6,8-di(tert-butyl)-2,5-dichloro-2-oxo-and 4-aryl(alkyl)-6-tert-butyl-2,8-dichloro-2-oxo-2H-benzo[e][1
3,5-二(叔丁基)-1,2-苯醌与芳基-和烷基乙炔在三氯化磷存在下反应得到4-芳基(烷基)-8-叔丁基-2,6-二氯- 2-氧代-2H-苯并[e][1,2]氧代膦作为叔丁基被氯原子的主要同位取代产物。4-芳基(烷基)-6,8-二(叔丁基)-2,5-二氯-2-氧代-和4-芳基(烷基)-6-叔丁基-2,8-二氯-2-得到氧代-2H-苯并[e][1,2]氧代膦作为次要产物。该系列稳定代表的结构由 X 射线衍射证实。