![2-{3-[4-(3-Chlorophenyl)-1-piperazinyl]propyl}[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one hydrochloride (1:1) structure](https://static.chemtradehub.com/structs/253/25332-39-2-496e.webp "2-{3-[4-(3-Chlorophenyl)-1-piperazinyl]propyl}[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one hydrochloride (1:1) structure")
2-{3-[4-(3-Chlorophenyl)-1-piperazinyl]propyl}[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one hydrochloride (1:1)
CAS Number:
25332-39-2
Molecular Formula:
C19H23Cl2N5O
Visible-light-induced organocatalytic enantioselective N–H insertion of α-diazoesters enabled by indirect free carbene capture
Literature Information
Publication Date
2022-11-29
DOI
10.1039/D2SC05149D
Impact Factor
9.825
Authors
Wengang Guo, Ying Zhou, Hongling Xie, Xin Yue, Feng Jiang, Hai Huang, Zhengyu Han
View Original
Abstract
While asymmetric insertion of metal carbenes into H–X (X = C, N, O, etc.) bonds has been well-established, asymmetric control over free carbenes is challenging due to the presence of strong background reactions and lack of any anchor for a catalyst interaction. Here we have achieved the first photo-induced metal-free asymmetric H–X bond insertion of this type. With visible light used as a promoter and a chiral phosphoric acid used as a catalyst, α-diazoesters and aryl amines underwent smooth N–H bond insertion to form enantioenriched α-aminoesters with high efficiency and good enantioselectivity under mild conditions. Key to the success was the use of DMSO as an additive, which served to rapidly capture the highly reactive free carbene intermediate to form a domesticated sulfoxonium ylide.
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Source Journal
Chemical Science
CiteScore:
14.4
Self-citation Rate:
3.9%
Articles per Year:
1413
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Recommended Compounds
Tris(2-ethylhexyl) 4,4',4''-(1,3,5-triazine-2,4,6-triyltriimino)tribenzoate
CAS Number:
88122-99-0
Molecular Formula:
C48H66N6O6
![[2',6'-bis(propan-2-yloxy)-[1,1'-biphenyl]-3-yl]dicyclohexylphosphane structure](https://static.chemtradehub.com/structs/787/787618-22-8-dda2.webp "[2',6'-bis(propan-2-yloxy)-[1,1'-biphenyl]-3-yl]dicyclohexylphosphane structure")
[2',6'-bis(propan-2-yloxy)-[1,1'-biphenyl]-3-yl]dicyclohexylphosphane
CAS Number:
787618-22-8
Molecular Formula:
C30H43O2P
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