作者:François Vermersch、Sima Yazdani、Glen P. Junor、Douglas B. Grotjahn、Rodolphe Jazzar、Guy Bertrand
DOI:10.1002/anie.202111588
日期:2021.12.20
Pyrazol-4-ylidenes, a type of mesoionic carbenes, also named cyclic-bentallenes (CBA), can be more basic than Verkade proazaphosphatrane and even Schwesinger phosphazene P4(tBu). With these results it is demonstrated that carbenes should not be overlooked as neutral purely organic superbases.
Pyrazol-4-ylidenes 是一种中离子卡宾,也称为环 Bentallenes (CBA),比 Verkade proazaphosphatrane 甚至 Schwesinger phosphazene P 4 ( t Bu) 的碱性更强。这些结果表明,作为中性纯有机超强碱不应忽视卡宾。