本文描述了铁/光氧化还原双催化酰基氮烯的形成以及酰基氮烯在构建各种 C-O 键中对苯酞的应用。开发的反应从N -methoxyl-2-alkylbenzamides 开始。机理调查表明,该反应涉及基于铁氮烯的氢原子提取 (HAA)、自由基-极性交叉和O-亲核 S N 1。值得注意的是,未观察到以前出版物中经常报道的自由基反弹。该反应代表了基于酰基氮烯的苯酞合成的第一个例子。此外,它还作为合成3-丁基苯酞(NBP)、沙利度胺、Pomalyst和Otezia等市售药物的补充剂。
Visible Light-Promoted Magnesium, Iron, and Nickel Catalysis Enabling C(sp<sup>3</sup>)–H Lactonization of 2-Alkylbenzoic Acids
作者:Sasa Li、Mincong Su、Jie Sun、Kunjun Hu、Jian Jin
DOI:10.1021/acs.orglett.1c01984
日期:2021.8.6
patterns could be transformed into the corresponding phthalide products. Based on the mechanistic experimentation and reported prior studies, a possible mechanism for the benzylic oxidative lactonization reaction was proposed with the hypothetic photoactive ternary complex formed between the 2-alkylbenzoic acid substrate, magnesium ion, and bromate anion.
Vicinal diester dianions. Annelation with ω-bromoesters. A simple preparation of bicyclo[4.4.0] decan-2-one derivatives valuable in sesquiterpene synthesis.
作者:Kevin G. Bilyard、Peter J. Garratt
DOI:10.1016/s0040-4039(01)90431-9
日期:1981.1
The dianion of dimethyl, cyclohex-4-ene-1,2-dicarboxylate (1) can be annelated with ethyl 4-bromobutyrate (2) to give cis-dimethyl 1,2,3,5-tetrahydro-1-oxo-4a(4H), 8a (8H)-naphthalenedicarboxylate (5), which is readily transformed into 8a, a synthetic intermediate for a number of sesquiterpene syntheses.
Comparative study of the reactions of dilithiated vicinal diesters and dilithiated 1,2-dicarboximides with methyl iodide, .alpha.,.omega.-dihalides, .alpha.,.omega.-ditosylates and .omega.-bromo esters
作者:Kevin G. Bilyard、Peter J. Garratt、Roger Hunter、Ester Lete
DOI:10.1021/jo00145a024
日期:1982.11
BILYARD, K. G.;GARRATT, P. J.;HUNTER, R.;LETE, E., J. ORG. CHEM., 1982, 47, N 24, 4731-4736
作者:BILYARD, K. G.、GARRATT, P. J.、HUNTER, R.、LETE, E.