
TY  - JOUR
A1  - Hudson, CB 
A1  - Robertson, AV 
T1  - The reactions of 3,4-dehydroproline with substituted isatins
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1967
VL  - 20
IS  - 7
SP  - 1521
EP  - 1531
KW  - 
UR  - https://doi.org/10.1071/CH9671521 
N2  - Substituted isatins having a free NH group react with 3,4- dehydroproline, like isatin itself, to give 3-(1-pyrrolyl)oxindoles. Analysis of the N.M.R. spectra of the 5-nitro and 5,7-dibromo analogues confirms that the isatins condense at their 3- and not their 2-carbonyl groups. N-Alkylisatins form similar products which, depending on the conditions, may react with a further molecule of the isatin to give unstable di-adducts whose structures have been determined. 
ER  -

