PREPARATION AND REACTION OF QUINOLINYL (OR PYRIDINYL)PHOSPHONIUM SALTS WITH BASE AND PIVALALDEHYDE

[摘要]：alpha- and gamma-Heteroaryltriphenylphosphonium iodides were prepared by reaction of the corresponding heteroaryl iodides with triphenylphosphine. Reaction of beta-heteroaryl iodides with triphenylphosphine in the presence of a palladium catalyst gave beta-heteroaryltriphenylphosphonium iodides. Elimination of the heteroaryl group was achieved by treating the heteroaryltriphenylphosphonium iodides with a base. Further, the heteroaryl group was trapped with pivalaldehyde to introduce a pivaloyl substituent onto the heteroaromatic ring.

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