SYNTHESIS AND [3+2] CYCLOADDITION OF A 2,2-DIALKOXY-1-METHYLENECYCLOPROPANE: 6,6-DIMETHYL-1-METHYLENE-4,8-DIOXASPIRO[2.5]OCTANE and cis-5-(5,5-DIMETHYL-1,3-DIOXAN-2-YLIDENE)HEXAHYDRO-1(2H)-PENTALEN-2-ONE
Submitted by: Masaharu Nakamura, Xiao Qun Wang, Masahiko Isaka, Shigeru Yamago, and Eiichi Nakamura
Published in Collective Volume 11 p. 457, Annual Volume 80 p. 144

CYCLOPROPENONE
Submitted by: R. Breslow, J. Pecoraro, and T. Sugimoto
Published in Collective Volume 6 p. 361, Annual Volume 57 p. 41