![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
Our studies of the conjugative properties of cyclopropanes required the synthesis of large quantities of spiro [cyclopropane-1,9′- [9H] fluorene] (1) and its derivatives.1 The method of Corey2 is suited for the preparation of modest (1–5 g) amounts of 1 in one step. This procedure has failed to produce the desired cyclopropane when applied to substituted fluorenones.3