نتایج جستجو برای: 3 dihydroquinazolin 41h ones
تعداد نتایج: 1909670 فیلتر نتایج به سال:
2-Dihydroquinazolin-4(1H)-thiones were prepared in up to excellent yields from 2-aminobenzothioamides and aldehydes. The reaction is carried out in water without the use of any catalyst or promoter. The sulfur-containing substrate can be obtained easily by thiation of the corresponding nitrile by solid sodium hydrosulfide.
facile and versatile procedures have been explored for the synthesis of tetrahydropyridines and 2,3-dihydroquinazolin-4(1h)-ones. these protocols employ the one-pot multi-component condensation of arylaldehydes and aromatic amines with β-keto esters and isatoic anhydride in chloroacetic acid, respectively. the reactions proceeded smoothly to generate the corresponding products in high yield. we...
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