Reaction of 4-methoxy-4-(1-methylethenyl)-2-cyclobutenone derivatives with2-lithiopropene and alpha-lithiostyrene: synthesis of eight-membered ring carbocycles
M. Zora et al., Reaction of 4-methoxy-4-(1-methylethenyl)-2-cyclobutenone derivatives with2-lithiopropene and alpha-lithiostyrene: synthesis of eight-membered ring carbocycles, TETRAHEDR L, 41(36), 2000, pp. 7111-7114
2-Alkyl- or phenyl-substituted 4-methoxy-4-(1-methylethenyl)-2-cyclobutenon
es react with 2-lithiopropene or alpha-lithiostyrene to produce 4-methoxy-2
,4-cyclooctadienones in moderate yield, accompanied by varying amounts of 4
-methoxy-4-(1-methylethenyl)-2-cyclohexenones. The reaction is general for
2-alkyl substituted 4-methoxy-4-(1-methylethenyl)-2-cyclobutenones. (C) 200
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