70401-39-7Relevant academic research and scientific papers
C-(2-hydroxyaryl)-N-(2-hydroxyphenylmethyl)nitro nes as regioselective bidentate ligands in boron chelate formation. Crystal and molecular structures of a diphenylboron complex and its parent ligand
Kliegel, Wolfgang,Metge, Joerg,Rettig, Steven J.,Trotter, James
, p. 1082 - 1092 (1998)
The C-(2-hydroxyaryl)-N-(2-hydroxyphenylmethyl)nitrones 5 are synthesized by the condensation of variously substituted salicylaldehydes with N-(2-hydroxyphenylmethyl)-hydroxylamine. These nitrones react with diphenylborinic acid anhydride to form seven-membered diphenylboron chelates 6. Crystals of C-(4-diethylamino-2-hydroxyphenyl)-N-(2- hydroxyphenylmethyl)nitrone, 5d, are monoclinic, a = 6.911 (2), b = 10.663(2), c = 22.951(1) A, β = 97.33(1)°, Z = 4, space group P21/n, and those of 4-dimethylamino-8- (2- hydroxyphenyl methyl)- 6,6-diphenyl-5,7- dioxa-8-azonia-6-borata-6,7-dihydro-5H-benzocyclohepten e-ethanol, 6d-EtOH, are monoclinic, a = 9.069(2), b = 29.88l(1), c = 11.1883(6) A, β = 109.426(9)°, Z = 4, space group P21/n. The structures were solved by direct methods and refined by full-matrix least-squares procedures to R = 0.032 and 0.039 (R(w) = 0.031 and 0.036) for 2510 and 4162 reflections with I > 3σ(I), respectively.
Efficient synthesis of substituted 2-(4H-1,3-benzoxazin-2-yl)phenols via a pseudo three-component reaction
Wang, Ting,Dai, Chenlu,Qing, Xushun,Wang, Cunde
, p. 121 - 124 (2018)
An efficient pseudo three-component reaction between substituted 2-hydroxybenzaldehydes and ammonium acetate for the preparation of substituted 2-(4H-1,3-benzoxazin-2-yl)phenols in moderate to good yields (70?80%) was developed. The structure of a typical product was confirmed by X-ray crystallography.
