Tandem Pummerer Diels-Alder sequence for the preparation of α-thio substituted naphthalene derivatives
摘要:
The alpha-thiocarbocation generated from the Pummerer reaction of an o-benzoyl substituted sulfoxide is intercepted by the adjacent keto group to produce an alpha-thio-isobenzofuran as a transient intermediate which undergoes a subsequent Diels-Alder cycloaddition with added dienophiles.