Synthesis of tetrasubstituted cyclopropenes and medium to large carbocyclic alkenes by the intramolecular reductive coupling of diketones with titanium trichloride- …

AL Baumstark, CJ McCloskey…

Index: Baumstark,A.L. et al. Journal of Organic Chemistry, 1978 , vol. 43, # 18 p. 3609 - 3611

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Citation Number: 47

Abstract

Low-valent titanium reagents offer a convenient method for the preparation of alkenes from ketones.'The intramolecular reductive coupling of dicarbonyls to cycloalkenes has been carried out. 2 Recently, McMurry and Kees have shownzc the potential of the method in medium-and largering carbocyclic synthesis by preparing cycloalkenes, ring size 4-16, with TiCls/Zn-Cu. There have been no reports of cyclopropene synthesis by low-valent titanium ...

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