金并通过间苯三酚和茚三酮之间的一锅反应意外地合成了新的cavitand。通过用苯并[ n ]茚三酮代替茚三酮可得到更深的空洞。同时使用茚三酮和苯并[ f ]茚三酮进行反应,可提供较低对称性的“混合碗”。其他环状聚酮,例如1,2-茚满二酮和四氧嘧啶与间苯三酚仅形成部分封闭的结构。该反应中中间体化合物的晶体学研究证实了金的假设,即碗的形成涉及半缩环的开环和重排。
Serendipitous one-pot synthesis of brand-new, bowl-shaped molecular architecture from phloroglucinol and ninhydrin
摘要:
We prepared a brand-new, bowl-shaped molecular architecture in one step from the reaction of ninhydrin and phloroglucinol in acetic acid in excellent yield (95%) in a one-pot reaction and the bipolarofacial nature of this compound was confirmed by its X-ray structure. (c) 2005 Elsevier Ltd. All rights reserved.
A biomimetic synthesis of (−)-ascorbyl phloroglucinol and studies toward the construction of ascorbyl-modified catechin natural products and analogues
作者:Sneha A. Belapure、Zachary G. Beamer、John E. Bartmess、Shawn R. Campagna
DOI:10.1016/j.tet.2011.09.102
日期:2011.12
A method for appending the ascorbyl moiety onto the framework of phenolic natural products has been developed. This reaction proceeds in two steps from.-ascorbic acid and employs acetic acid catalysis. Excellent stereoselectivity is observed during C C bond formation between the phenolic compound and dehydroascorbic acid, and the process is also chemoselective for phenol derivatives bearing electron-donating substituents in each of the 1, 3, and 5 positions. Further, good regioselectivity was also observed when phenols lacking an axis of C-2 symmetry were employed. This method has led to the synthesis of (-)-ascorbyl phloroglucinol as well as the tetracyclic core of ascorbyl-modified catechin natural products. (C) 2011 Elsevier Ltd. All rights reserved.
Kundu, Sandip Kumar; Patra, Amarendra; Pramanik, Animesh, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2004, vol. 43, # 3, p. 604 - 611
The reaction between phloroglucinol and vic polycarbonyl compounds: extension and mechanistic elucidation of Kim's synthesis for bipolarofacial bowl-shaped compounds
serendipitous synthesis of a novel cavitand by the one-pot reaction between phloroglucinol and ninhydrin was revisited and extended. A much deeper cavitand was obtained by replacing ninhydrin with benzo[f]ninhydrin. Performing the reaction in a stepwise manner, employing both ninhydrin and benzo[f]ninhydrin, provided ‘mixed bowls’ of lower symmetry. Other cyclic polyketones, such as 1,2-indanedione and alloxan
金并通过间苯三酚和茚三酮之间的一锅反应意外地合成了新的cavitand。通过用苯并[ n ]茚三酮代替茚三酮可得到更深的空洞。同时使用茚三酮和苯并[ f ]茚三酮进行反应,可提供较低对称性的“混合碗”。其他环状聚酮,例如1,2-茚满二酮和四氧嘧啶与间苯三酚仅形成部分封闭的结构。该反应中中间体化合物的晶体学研究证实了金的假设,即碗的形成涉及半缩环的开环和重排。
Serendipitous one-pot synthesis of brand-new, bowl-shaped molecular architecture from phloroglucinol and ninhydrin
作者:Jeong Eun Na、Ka Young Lee、Joobeom Seo、Jae Nyoung Kim
DOI:10.1016/j.tetlet.2005.04.117
日期:2005.6
We prepared a brand-new, bowl-shaped molecular architecture in one step from the reaction of ninhydrin and phloroglucinol in acetic acid in excellent yield (95%) in a one-pot reaction and the bipolarofacial nature of this compound was confirmed by its X-ray structure. (c) 2005 Elsevier Ltd. All rights reserved.