Eight 7-benzyl-3-<i>tert</i>-butyl-1-phenylpyrazolo[3,4-<i>d</i>]oxazines, encompassing structures containing no intermolecular hydrogen bonds, and hydrogen-bonded structures in one, two or three dimensions
作者:Juan C. Castillo、Rodrigo Abonía、Justo Cobo、Christopher Glidewell
DOI:10.1107/s0108270109028017
日期:2009.8.15
hydrogen bonds links the molecules of 3‐tert‐butyl‐1‐phenyl‐7‐(3,4,5‐trimethoxybenzyl)‐6,7‐dihydro‐1H,4H‐pyrazolo[3,4‐d][1,3]oxazine, C25H31N3O4, (VIII), into complex sheets. In each compound, the oxazine ring adopts a half‐chair conformation, while the orientations of the pendent phenyl and tert‐butyl substituents relative to the pyrazolo[3,4‐d]oxazine unit are all very similar.
7-Benzyl-3- tert -butyl-1-phenyl-6,7-dihydro-1 H ,4 H- pyrazolo[3,4- d ][1,3]oxazine, C 22 H 25 N 3 O, ( I), 和 3-叔丁基-7-(4-甲基苄基)-1-苯基-6,7-二氢-1 H ,4 H-吡唑并[3,4- d ][1,3]恶嗪, C 23 H 27 N 3 O (II) 在空间群P 2 1中同晶,分子通过 C-H...O 氢键连接成链。在每个 3-叔丁基-7-(4-甲氧基苄基)-1-苯基-6,7-二氢-1 H ,4H- pyrazolo[3,4- d ][1,3]oxazine, C 23 H 27 N 3 O 2 , (III),其泡孔尺寸与 (I) 和 (II) 非常相似,也在P 中2 1 , 和 3-叔丁基-1-苯基-7-[4-(三氟甲基)苄基]-6,7-二氢-1 H ,4 H-吡唑并[3