74204-85-6Relevant academic research and scientific papers
Synthesis and catalytic properties of 4-aryl-2,3-dihydro-4 H -pyrimido[2,3- b ]benzothiazoles for asymmetric acyl or carboxyl group transfer reactions
Viswambharan, Baby,Okimura, Tatsuya,Suzuki, Satoko,Okamoto, Sentaro
experimental part, p. 6678 - 6685 (2011/10/09)
4-Aryl-2,3-dihydro-4H-pyrimido[2,3-b]benzothiazoles (4-Ar-DHPBs) were synthesized and their catalytic activity and selectivity in kinetic resolution of a secondary alcohol as well as in the Steglich rearrangement and related reactions were evaluated. 4-Aryl-DHPBs showed low enantioselectivity in the acylative kinetic resolution of 1-phenylethanol. Conversely, they catalyzed the Steglich rearrangement with moderate to excellent enantioselectivity, demonstrating the possibility for remote stereocontrol by introduction of a substituent at the 4-position of DHPB.
CYCLIZATION OF 1-THIOCARBAMOYL-2-PHENYLPYRAZOLIDINES
Deeva, N. Yu.,Kost, A. N.
, p. 169 - 174 (2007/10/02)
Thiocarbamoyl derivatives of N-phenylpyrazolines are converted under the influence of acidic agents to mixture of tetrahydropyrimidobenzothiazoles and 2-imino-3-aminoalkylbenzothiazoles and not only to tetrahydropyrimidobenzothiazoles, as previousl
