Selectively C-deuterated indigotins were synthesized from halogenated indigotins la-e as precursors. The described reactions - used already by the ancient purple dyers - allowed the introduction of D-atoms at defined positions of the indigo molecule. The exchange of halogen atoms by D-atoms was induced by UV irradiation of the leuco compounds 2a-c and 3a-c in D2O. The resulting leuco forms Ja-e were oxidized to the deuterated indigotins 5a-c. Some conclusions were drawn as to the kinetics of the reaction. The physical properties of the new compounds were determined.
Protecting group chemistry for clean, reductant-free dyeing
申请人:The Regents of the University of California
公开号:US10704070B2
公开(公告)日:2020-07-07
The present disclosure relates to the biosynthesis of indigoid dye precursors and their conversion to indigoid dyes. Specifically, the present disclosure relates to methods of using polypeptides to produce indigoid dye precursors from indole feed compounds, and the use of the indigoid dye precursors to produce indigoid dyes.
PROTECTING GROUP CHEMISTRY FOR CLEAN, REDUCTANT-FREE DYEING
申请人:The Regents of the University of California
公开号:US20180037917A1
公开(公告)日:2018-02-08
The present disclosure relates to the biosynthesis of indigoid dye precursors and their conversion to indigoid dyes. Specifically, the present disclosure relates to methods of using polypeptides to produce indigoid dye precursors from indole feed compounds, and the use of the indigoid dye precursors to produce indigoid dyes.