Synthesis of spiro-annelated pyroglutamides by the Ugi reaction
摘要:
Three component Ugi reaction between 1(2-oxoethyl)cycloalkanecarboxylic acids, amines and isocyanides affords spirocyclic N-substituted 5-carbamoyl-2-pyrrolidones.
Synthesis of Tetrazole-substituted Spirocyclic γ-lactams by One-pot Azido-Ugi Reaction–cyclization
摘要:
1-Ethoxycarbonyl-1-(2-oxoethyl)cycloalkanes in the azido-Ugi reaction with primary amines, isocyanides and TMS-N-3 afford 3-(tetrazol-5-yl)-2-azaspiro [4.n]alkan-1-ones.
Facile Synthesis of Single α-<i>tert</i>
-Alkylated Acetaldehydes by Hydroxyalkylation of Enamides in Aqueous Solution
作者:Yumi Murata、Takashi Nishikata
DOI:10.1002/chem.201801065
日期:2018.4.25
Cu‐catalyzed hydroxyalkylation of enamides in aqueous solutions. The yields of the products were very high and there was excellent functional group compatibility. Our reaction allows easy access to highly functionalized acetaldehydes that can be used to synthesize further useful compounds including spirocycles. The control experiments revealed that this reaction includes hydroxyalkylation processes via