Migratory aptitude of hydride highest(excluding exceptions stated below)

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Bayer villiger reaction also seen for para nitro benzaldehyde with mcpba or cf3coooh giving para nitro benzoic acid...so migratory aptitude of hydride should be even higher...exceptions when benzene ring attached to c double bind o has very electron donating/releasing group then benzene ring migrates....so hydride should have highest migratory aptitude isnt it? Itsnotsarthak (talk) 13:59, 26 August 2021 (UTC)Reply