Unusual Intramolecular Bridging Reaction in Thiacalix[4]arene Series
收藏NIAID Data Ecosystem2026-03-06 收录
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Thiacalix[4]arene immobilized in the cone conformation undergoes a direct formylation reaction giving unusual products in high yields. The Duff reaction (urotropine/TFA) leads to unprecedented intramolecularly bridged compounds possessing two formyl groups on the opposite para- or para-/meta-positions. The comparison with the corresponding classical calix[4]arene analogues indicates an amazingly different reactivity of the thiacalix[4]arene system.
创建时间：
2009-09-17
