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Synlett 1993; 1993(7): 483-485
DOI: 10.1055/s-1993-22499
DOI: 10.1055/s-1993-22499
letter
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Dimerization of an Allylidenecyclopropane at a Surprisingly Low Temperature1
Further Information
Publication History
Publication Date:
19 March 2002 (online)
The bromo-allylidenecyclopropane 6 has been prepared and has been found to form a [2+2]-cyclodimer upon bromine lithium exchange at -78°C/-90°C; the structure of the dimer has been proved by an X-ray structure analysis to be that of trans-7,8-bis-3′-(1,2-dihydronaphthalinyl)dispiro[2.0.2.2]octane (8).