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Roberto Ballini Noelia Araújo Bazn Giovanna Bosica Alessandro Palmieri 《Tetrahedron letters》2008,49(24):3865-3867
A variety of primary and secondary amines give the conjugate reaction with β-nitroacrylates, via an anti-Michael addition, without any catalyst and/or solvent, allowing good yields of β-nitro-α-amino esters. 相似文献
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The reaction of 2-(diphenylmethylene)thietan-3-one (2) with 1,2,4,5-tetrazines (3a-c) in KOH/MeOH/THF gives 4H-pyrazolo[5,1-c]thiazines (7a-c). This novel condensation reaction proceeds via the intermediacy of an 8-(diphenylmethylene)-2H-1,4,5-thiadiazocin-7(8H)-one (5), which undergoes a multi-step rearrangement including a rare anti-Michael addition. 相似文献
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Alexei V. Buevich Yusheng Wu Tze-Ming Chan Andrew Stamford 《Tetrahedron letters》2008,49(13):2132-2135
This report describes a novel regioselective contra-Michael addition to cinnamic esters that utilizes NaNO2-ceric ammonium nitrate. 相似文献
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Quinol ethers and quinone monoketals are shown to undergo formal anti-Michael addition reactions with allylindium reagents at room temperature to give only ortho allylated phenols in good yields. 相似文献
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