The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing quantitative kinetic, spectroscopic, and theoretical assessments of solvent structures and their interactions with reaction intermediates. 1977-07-7, Name is 11-(4-Methylpiperazin-1-yl)-5H-dibenzo[b,e][1,4]diazepine, molecular formula is C18H20N4, belongs to pyrrolines compound, is a common compound. In a patnet, author is Ricko, Sebastijan, once mentioned the new application about 1977-07-7, Quality Control of 11-(4-Methylpiperazin-1-yl)-5H-dibenzo[b,e][1,4]diazepine.
Construction of Vicinal Tetrasubstituted Stereogenic Centers via a Mannich-Type Organocatalyzed Addition of Delta(2)-Pyrrolin-4-ones to Isatin Imines
Racemic (2)-pyrrolin-4-ones (i.e. 4-pyrrolones), easily available in two steps from N-protected -amino acids, undergo organocatalysed asymmetric Mannich-type addition to isatin-derived ketimines to furnish the non-racemic oxindole-(2)-pyrrolin-4-one adducts, stereoselectively (up to 96% ee, dr15:1). The oxindole-pyrrolone products feature vicinal tetrasubstituted carbon stereocenters. The developed protocol has a broad substrate scope and tolerates diverse substituents at position C-5 in 4-pyrrolones and at positions N-1 and C-5/7 in isatin imines.
The result showed that such a combination of chemo- and biocatalysis improved the catalytic yield more than two times compared with that of sole metal catalysis.I hope my blog about 1977-07-7 is helpful to your research. Quality Control of 11-(4-Methylpiperazin-1-yl)-5H-dibenzo[b,e][1,4]diazepine.
Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem