Facile access to <i>N</i>-formyl imide as an <i>N</i>-formylating agent for the direct synthesis of <i>N</i>-formamides, benzimidazoles and quinazolinones
N-Formamide synthesis using N-formyl imide with primary and secondary amines with catalytic amounts of p-toluenesulfonic acid monohydrate (TsOH·H2O) is described. This reaction is performed in water without the use of surfactants. Moreover, N-formyl imide is efficiently synthesized using acylamidines with TsOH·H2O in water. In addition, N-formyl imide was successfully used as a carbonyl source in the
A selective functionalization of C–C═C bonds toward N–C═O bonds is realized by an n-Bu4NI-catalyzed reaction of 3-methylindoles with primaryamines using TBHP as the unique oxidant. The systematic process involves oxygenation, nitrogenation, ring-opening, and recyclization, affording a broad range of quinazolinones in good to excellent yields.
One-pot synthesis of quinazolin-4(3H)-ones and2,3-dihydroquinazolin-4(1H)-ones utilizingN-(2-aminobenzoyl)benzotriazoles
作者:İlbilge Merve ŞENOL、İlhami ÇELİK、İlker AVAN
DOI:10.3906/kim-1906-50
日期:——
A convenient and efficient method has emerged for the one-pot synthesis of substitutedquinazolin-4(3$H)$-ones and nonaromatic alkaloids. 2-Substituted quinazolin-4(3H)-ones, 2,3-disubstituted quinazolin-4(3$H)$-ones, and 2,3-dihydroquinazolin-4(1$H)$-ones were obtained at yields of 46% to 95% by a one-pot reaction of $N$-(2-aminobenzoyl) benzotriazoles with amines and orthoesters or aldehydes under
一种方便,有效的方法已经出现,用于一锅合成取代的喹唑啉-4(3 $ H)$-one和非芳族生物碱。获得了2-取代的喹唑啉-4(3H)-一,2,3-二取代喹唑啉-4(3 $ H)$-一和2,3-二氢喹唑啉-4(1H)$-一。 $ N $-(2-氨基苯甲酰基)苯并三唑与胺和原酸酯或醛在无催化剂的条件下进行一锅反应,可将其提高到46%至95%。
HYDROXYMETHYL PYRROLIDINES AS BETA 3 ADRENERGIC RECEPTOR AGONISTS
申请人:Berger Richard
公开号:US20110028461A1
公开(公告)日:2011-02-03
The present invention provides compounds of Formula I, pharmaceutical compositions thereof, and method of using the same in the treatment or prevention of diseases mediated by the activation of β3-adrenoceptor.
tert-Butyl Hydroperoxide Promoted the Reaction of Quinazoline-3-oxides with Primary Amines Affording Quinazolin-4(3<i>H</i>)-ones
作者:Jin Luo、Juelin Wan、Lianlian Wu、Lingyun Yang、Tao Wang
DOI:10.1021/acs.joc.2c00898
日期:2022.8.5
synthesis of quinazolin-4(3H)-ones via the reaction of quinazoline-3-oxides with primary amines is described. This approach is demonstrated to be applicable for a broad range of substrates and proceeds efficiently under metal-free and mild reaction conditions employing easily available tert-butyl hydroperoxide as the oxidant. Remarkably, 3-(2-(1H-indol-3-yl) ethyl)quinazolin-4(3H)-one 3w, which was conveniently
介绍了一种通过 quinazolin-3-氧化物与伯胺反应合成 quinazolin-4(3 H )-ones 的有效且简便的方法。这种方法被证明适用于广泛的底物,并且在使用容易获得的叔丁基过氧化氢作为氧化剂的无金属和温和的反应条件下有效地进行。值得注意的是,3-(2-(1 H -indol-3-yl) ethyl)quinazolin-4(3 H )-one 3w是通过该方法方便地以 70% 的收率获得的,是合成生物活性吴茱萸碱和鲁坦平。