✦ LIBER ✦

Isomer ratios in formylmethylenetriphenylphosphoranes and their alkylation products

✍ Scribed by C.J. Devlin; Brian J. Walker

No coin nor oath required. For personal study only.

✦ Synopsis

Isomer ratios, and the effect of changing solvent on these ratios, have been studied ior both ester (l)l and keto (2)2 stabilised ylids.

Ester ylids exist as a mixture of cis (la) and trans (lb) isomers in CDC13, the amount of trans increasing with the bulk of R' la and/or

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