FIRST SYNTHESIS OF SINGLE AND MIXED α-OXO KETENE DITHIOACETALS FROM ACTIVE METHENYL PRECURSORS
作者:Qian Zhang、Yu-long Zhao、Yao Shi、Li-xiang Wang、Qun Liu
DOI:10.1081/scc-120006008
日期:2002.1
ABSTRACT β-Dioxodithioate were produced easily from active methenyl precursors, carbondisulfide and RX with potassium carbonate as base. By a selective basic assistant cleavage of a carbon–carbon bond at the β-dicarbonyl unit of β-dioxodithioate and the subsequent alkylation with RX/R′X in situ, single or mixed α-oxo ketene dithioacetals were obtained in good yields.
摘要 以碳酸钾为碱,由活性亚甲基前体、二硫化碳和 RX 可以很容易地制备 β-二氧二硫代酸酯。通过选择性碱性助剂裂解 β-二氧代二硫代酸酯的 β-二羰基单元上的碳-碳键,随后用 RX/R'X 原位烷基化,以良好的收率获得单一或混合的 α-氧代烯酮二硫代缩醛。