136179-67-4Relevant academic research and scientific papers
QUANTUM-CHEMICAL STUDY OF THE REACTION OF KETENE WITH ACYL ISOCYANATES
Yakovlev, I. P.,Zakhs, V. E.,Prep'yalov, A. V.,Ivin, B. A.
, p. 1450 - 1453 (2007/10/02)
-Cycloaddition of ketene to acyl isocyanates was studied in terms of frontier molecular orbital theory.The direction of the reaction and the type of the final product (4-hydroxy-6H-1,3-oxazin-6-one or 2-pyranone) are determined by structural and energetic features of frontier orbitals of ketene and acyl isocyanates.
INVESTIGATION OF AZINES AND AZOLES. LXXVII. REACTION OF KETENE WITH ACYL ISOCYANATES
Zakhs, V. E.,Yakovlev, I. P.,Tretyakov, A. A.,Gindin, V. A.,Prepyalov, A. V.,Ivin, B. A.
, p. 744 - 751 (2007/10/02)
The reaction of ketene with substituted benzoyl, 2-furoyl, 1-naphthoyl, acetyl, butyryl, and trichloroacetyl isocyanates in low-polarity aprotic solvents leads to the formation of the corresponding 2-substituted 4-hydroxy-6H-1,3-oxazin-6-ones and/or their 4-O-acetyl-derivatives.In this reaction methoxy-, methylthio-, ethoxy-, and ethylthiocarbonyl isocyanates give mainly 6-alkoxy- and alkylthiocarbonylamino-4-hydroxy-2-pyranones.
