Regioselective Reductive Ring Cleavage of 3-Benzyltetrahydro-1,3-oxazines to 3-Dialkylaminopropanols and of 3-Benzyl-3-methyltetrahydro-1,3-oxazinium Iodides to Alkyl 3-Dialkylaminopropyl Ethers
Regioselective Reductive Ring Cleavage of 3-Benzyltetrahydro-1,3-oxazines to 3-Dialkylaminopropanols and of 3-Benzyl-3-methyltetrahydro-1,3-oxazinium Iodides to Alkyl 3-Dialkylaminopropyl Ethers
Nucleophilic Ring Opening of 3-Benzyl-1,3-oxazinanes by Reformatsky Reagents. A Synthesis of β-Amino Ester Derivatives
作者:Angel Alberola、Maria A. Alvarez、Celia Andrés、Alfonso González、Rafael Pedrosa
DOI:10.1055/s-1990-27092
日期:——
2-Substituted 3-benzyl-1,3-oxazinanes react with the Reformatsky reagent derived from ethyl 2-bromoacetate and zinc, using very mild conditions (0°C, 1h) leading regioselectively to 3-substituted ethyl 3-[(3-hydroxypropyl)benzylamino] propanoates in high yield.
Alberola, Angel; Alvarez, Maria A.; Andres, Celia, Synthetic Communications, 1990, vol. 20, # 8, p. 1149 - 1158
作者:Alberola, Angel、Alvarez, Maria A.、Andres, Celia、Gonzalez, Alfonso、Pedrosa, Rafael
DOI:——
日期:——
ALBEROLA, ANGEL;ALVAREZ, MARIA A.;ANDRES, CELIA;GONZALEZ, ALFONSO;PEDROSA+, SYNTH. COMMUN., 20,(1990) N, C. 1149-1158
作者:ALBEROLA, ANGEL、ALVAREZ, MARIA A.、ANDRES, CELIA、GONZALEZ, ALFONSO、PEDROSA+
DOI:——
日期:——
ALBEROLA, ANGEL;ALVAREZ, MARIA A.;ANDRES, CELIA;GONZALEZ, ALFONSO;PEDROSA+, SYNTHESIS (BRD),(1990) N1, C. 1057-1058
作者:ALBEROLA, ANGEL、ALVAREZ, MARIA A.、ANDRES, CELIA、GONZALEZ, ALFONSO、PEDROSA+
DOI:——
日期:——
Regioselective Reductive Ring Cleavage of 3-Benzyltetrahydro-1,3-oxazines to 3-Dialkylaminopropanols and of 3-Benzyl-3-methyltetrahydro-1,3-oxazinium Iodides to Alkyl 3-Dialkylaminopropyl Ethers
作者:Angel Alberola、M Angeles Alvarez、Celia Andrés、Alfonso González、Rafael Pedrosa
DOI:10.1055/s-1990-26819
日期:——
3-Benzyltetrahydro-1,3-oxazines and their methiodides are ring-cleaved upon reduction with lithium aluminum hydride to give 3-dialkylaminopropanols or alkyl 3-dialkylaminopropyl ethers, respectively, in good yields. The reducing agent regioselectively cleaves the C-O bond in tetrahydro-1,3-oxazines and the C-N bond in the tetrahydro-1,3-oxazinium salts.