作者:A.K. Sarkar、A. Chatterjee、B. Bandyopadhyay
DOI:10.1016/0040-4020(76)80022-1
日期:1976.1
Dieckmann cyclisation of some β,γ-unsaturated diesters of the indane series gives as major product of the ring closure the compound derived from the more carbanion formed under standardised reaction conditions. The methyl β-(2-methoxycarbonylmethyl-7-methylinden-3-yl)propionate (2) on Dieckmann ring closure, gives 1-methoxycarbonyl-2-oxo-1,2,3,4-tetrahydro-8-methylfluorene (7) and not the isomeric
茚满系列的某些β,γ-不饱和二酯的Dieckmann环化反应给出了闭环的主要产物,该化合物是在标准反应条件下形成的更多碳负离子所衍生的化合物。在Dieckmann环上闭合β-(2-甲氧基羰基甲基-7-甲基茚-3-基)丙酸甲酯(2),得到1-甲氧基羰基-2-氧代-1,2,3,4-四氢-8-甲基芴(7),而不是先前报道的异构体3-甲氧基羰基-2-氧-1,2,3,4-四氢-8-甲基芴(6)。