Synthetic studies towards prismanes: 1,4-Bishomo-[6]-prismane (“garudane”)
作者:Goverdhan Mehta、S. Padma
DOI:10.1016/s0040-4020(01)81937-2
日期:1991.9
4-bishomohexaprismane 6, the true, face-to-face, heptacyclic dimer of norbornadiene ia delineated. In the initial phase, the readily available norborneno-p-benzoquinone 13 was transformed into the bishomoseco[7]-prismane dione 11 in three steps involving stereoselective 4+2 cycloaddition, regio- and stereoselective Ti3+ reduction of the enedione moiety and intramolecular 2+2-photocycloaddition. The versatile