Studies on Heterocyclic Colouring Matters Part II : Δ 2,2′  ‐Bi (2 H ‐1, 4‐benzothiazines) | Zendy

Kaul B. L. | Zendy

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Studies on Heterocyclic Colouring Matters Part II : Δ 2,2′ ‐Bi (2 H ‐1, 4‐benzothiazines)

Author(s) -

Kaul B. L.

Publication year - 1974

Publication title -

helvetica chimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.74

H-Index - 82

eISSN - 1522-2675

pISSN - 0018-019X

DOI - 10.1002/hlca.19740570846

Subject(s) - chemistry , benzothiazine , chromophore , stereochemistry , indigo , skeleton (computer programming) , medicinal chemistry , photochemistry , art , computer science , visual arts , programming language

A novel one‐step ‘Inverse Indigo Synthesis’ of the Δ 2,2′ ‐bi(3,4‐dihydro‐3‐oxo‐2 H ‐1, 4‐benzothiazine) chromophore is described. Structure, substitution reactions, mechanism of formation, colour and other relevant properties of this system have been investigated in relation to known thioindigos. A synthesis of the basic skeleton of one of the ‘Trichosiderins’, the colouring matters of human red hair, is reported.

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