Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Synthetic Exploration of alpha-Diazo gamma-Butyrolactams. / Zhukovsky, Daniil; Dar'in, Dmitry; Kantin, Grigory; Krasavin, Mikhail.
в: European Journal of Organic Chemistry, Том 2019, № 13, 09.04.2019, стр. 2397-2400.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Synthetic Exploration of alpha-Diazo gamma-Butyrolactams
AU - Zhukovsky, Daniil
AU - Dar'in, Dmitry
AU - Kantin, Grigory
AU - Krasavin, Mikhail
PY - 2019/4/9
Y1 - 2019/4/9
N2 - DIazo transfer reaction onto γ-butyrolactams (activated by α-ethyloxalylation) gave rare α-diazo γ-butyrolactams. Decomposition of the latter by Rh 2 (OAc) 4 in the presence of alcohols and water gave products of O–H insertion of the respective metal-cabene species. Silver triflate (1 mol-%) was found to convert the γ-butyrolactams investigated into 1,5-dihydro-2H-pyrrol-2-ones which represent versatile building blocks. Particular instability was noted for α-diazo γ-butyrolactams bearing alkyl or o-substituted aryl substituents on the nitrogen atom. These were found to dimerize in solution or upon storage at room temperature to give fully conjugated bis-hydrazones along with the loss of a nitrogen molecule.
AB - DIazo transfer reaction onto γ-butyrolactams (activated by α-ethyloxalylation) gave rare α-diazo γ-butyrolactams. Decomposition of the latter by Rh 2 (OAc) 4 in the presence of alcohols and water gave products of O–H insertion of the respective metal-cabene species. Silver triflate (1 mol-%) was found to convert the γ-butyrolactams investigated into 1,5-dihydro-2H-pyrrol-2-ones which represent versatile building blocks. Particular instability was noted for α-diazo γ-butyrolactams bearing alkyl or o-substituted aryl substituents on the nitrogen atom. These were found to dimerize in solution or upon storage at room temperature to give fully conjugated bis-hydrazones along with the loss of a nitrogen molecule.
KW - 1,2-Hydride shift
KW - 3-Pyrrolin-2-ones
KW - Diazo-transfer
KW - O–H insertion
KW - α-Diazolactams
KW - γ-Butyrolactams
KW - ASYMMETRIC-SYNTHESIS
KW - ENANTIOSELECTIVE SYNTHESIS
KW - O-H insertion
KW - STRATEGY
KW - alpha-Diazolactams
KW - INSERTION REACTION
KW - gamma-Butyrolactams
KW - DIAZOKETONES
KW - LACTAMS
KW - SELECTIVITY
KW - METATHESIS
KW - CONJUGATE ADDITION
KW - DIHYDROFURANS
UR - http://www.scopus.com/inward/record.url?scp=85064037393&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/synthetic-exploration-%CE%B1diazo-%CE%B3butyrolactams
U2 - 10.1002/ejoc.201900133
DO - 10.1002/ejoc.201900133
M3 - Article
VL - 2019
SP - 2397
EP - 2400
JO - European Journal of Organic Chemistry
JF - European Journal of Organic Chemistry
SN - 1434-193X
IS - 13
ER -
ID: 47798372