+++ 1 Tetrahedron и 1 Chem.Commun. СПАСИБО!!!

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Добрый день!
Помогите, пожалуйста, со статьями:

1. Tetrahedron, Volume 32, Issue 12, 1976, Pages 1407-1409
New benzoxazine and benzothiazine dyes
F. Chioccara, G. Prota, R. H. Thomson

DOI:

http://dx.doi.org/10.1016/0040-4020(76)85020-X

2. Journal of the Chemical Society, Chemical Communications, 1977, 50 - 51
Trimeric aldolization product of 1,4-benzothiazine
Francesco Chioccara, Ettore Novellino, Giuseppe Prota and Guido Sodano

DOI:

http://dx.doi.org/10.1039/C39770000050

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