Lewis Acid Catalyzed Synthesis of 1-Aryl-1,2-dihydro-naphtho[1,2-e][1,3]oxazin-3-ones under Solvent Free Conditions: A Mechanistic Approach
作者:Mukul Sharma、Sunny Manohar、Diwan S. Rawat
DOI:10.1002/jhet.825
日期:2012.5
Lewisacidscatalyzed highly efficient one‐pot three component coupling of β‐naphthol, benzaldehydes and urea to produce 1‐aryl‐1,2‐dihydro‐naphtho[1,2‐e][1,3]oxazin‐3‐one derivatives under solvent free conditions is described. Mechanistic studies confirmed that product formation is possible only at very high temperature (140–150°C) and at lower temperature (90–100°C) formation of 14‐aryl‐14H‐dibenzo(a
路易斯酸催化β-萘酚,苯甲醛和尿素的高效一锅三组分偶联,生成1-芳基-1,2-二氢萘并[1,2-e] [1,3]恶嗪-3-酮衍生物描述了在无溶剂条件下。机理的研究证实,产物形成可以仅在非常高的温度(140-150℃),并在较低的温度下(90-100℃)的14 -芳基- 14形成ħ -二苯并(A,j)的观察到的呫吨。在筛选的九种路易斯酸中,碘,P 2 O 5和Yb(OTf)3被发现是该多组分反应最有效的催化剂。
An efficient synthesis of naphtha[1,2-e]oxazinone and 14-substituted-14H-dibenzo[a,j]xanthene derivatives promoted by zinc oxide nanoparticle under thermal and solvent-free conditions
作者:G.B. Dharma Rao、M.P. Kaushik、A.K. Halve
DOI:10.1016/j.tetlet.2012.03.085
日期:2012.5
general synthetic route to the synthesis of 1,2-dihydro-1-arylnaphtho[1,2-e][1,3]oxazine-3-one and 14-substituted-14H-dibenzo[a,j]xanthenesderivatives has been developed using ZnO-NPs under thermal and solvent-freeconditions. The union of 2-naphthol, aldehyde, urea enabling the synthesis of naphtho[1,2-e][1,3]oxazinone and 2-naphthol, aldehyde gave dibenzo[a,j]xanthenes in excellent yields. This method
合成1,2-二氢-1-芳基萘并[1,2- e ] [1,3]恶嗪-3-酮和14-取代的14 H-二苯并[ a,j ]氧杂蒽衍生物的一般合成路线ZnO-NP是在无溶剂和无热条件下开发的。2-萘酚,醛,脲的结合使得能够合成萘[1,2- e ] [1,3]恶嗪酮和2-萘酚,醛以优异的产率得到了二苯并[ a,j ]黄嘌呤。该方法具有一些优点,如后处理简单,对环境无害,反应时间短以及产率高。
An efficient one-pot three component synthesis of 1,2-dihydro-1-arylnaphtho[1,2-e][1,3]oxazine-3-ones using montmorillonite k10 under solvent free conditions
作者:Srinivas Kantevari、Srinivasu V. N. Vuppalapati、Rajashaker Bantu、Lingaiah Nagarapu
DOI:10.1002/jhet.312
日期:——
An efficient green protocol for the preparation of 1,2‐dihydro‐1‐arylnaphtho[1,2‐e][1,3]oxazine‐3‐ones employing a three‐component one‐pot condensation reaction of β‐naphthol, aromatic aldehyde, urea or thiourea in the presence of montmorillonite K10 clay under solvent free conditions has been described. The present procedure offers advantages such as shorter reaction time (<90 min), simple workup
Imchen, Putusenla; Lensayula; Phucho, Tovishe, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2021, vol. 60, # 4, p. 598 - 604
作者:Imchen, Putusenla、Lensayula、Phucho, Tovishe、Thurr, Metsütu、Tumtin, Shokip、Zhimomi, Betokali K.