e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
The Journal of organic chemistry
Synthesis and Chemistry of 4, 5-Dihydrothieno [3, 2-b] pyrrol-6-one A Heteroindoxyl
AP Gaywood, H McNab
Index: Dyall, Leonard K.; Suffolk, Peter M.; Dehaen, Wim; L'abbe, Gerrit Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1994 , # 10 p. 2115 - 2119
... The Journal of Organic ... which analogous azo-coupling products have been shown by X-ray crystallography to adopt the hydrazone tautomer, the 13 C NMR chemical shift of ... CH 3 ), 111.6 [C(6)], 115.7 [quat, C(3a)], 140.6 [C(5)], 160.1 [quat, C(3)] and 170.3 [quat, C(6a)]; m/z 139 ...