1591958-35-8Relevant academic research and scientific papers
Rhodium-catalyzed transannulation of N-sulfonyl-1,2,3-triazoles and epoxides: Regioselective synthesis of substituted 3,4-dihydro-2 H-1,4-oxazines
Ma, Xueji,Pan, Shanfei,Wang, Hangxiang,Chen, Wanzhi
, p. 4554 - 4557 (2014)
Rhodium-catalyzed transannulation of 1,2,3-triazoles and ring-opening reactions of epoxides is described. A number of 3,4-dihydro-2H-1,4-oxazines are obtained in moderate yields probably involving generation of α-imino rhodium(II) carbene species.
Synthesis of β-amino-α,β-unsaturated ketone derivatives via sequential rhodium-catalyzed sulfur ylide formation/rearrangement
He, Jun,Man, Zengming,Shi, Yinping,Li, Chuan-Ying
, p. 4816 - 4823 (2015/05/13)
In the presence of a Rh(II) catalyst and β-(methylthio)-α,β-unsaturated ketones, 1-sulfonyl-1,2,3-triazoles can be converted into functionalized β-amino-α,β-unsaturated ketones via formation of α-imino rhodium carbene/sulfur ylide and subsequent rearrangement. The products decompose to useful 2-methylthiopyrrole derivatives conveniently in high yield.
Rhodium-Catalyzed Synthesis of 2,5-Epoxybenzo[f][1,4]oxazepines by Tandem Reaction of 1-Sulfonyl-1,2,3-triazoles and Salicylaldehydes
Shi, Yinping,Yu, Xing,Li, Chuan-Ying
supporting information, p. 6429 - 6433 (2015/10/19)
Readily available 1-sulfonyl-1,2,3-triazoles were converted into α-imino carbenes in the presence of catalytic amounts of rhodium(II) salts. The carbenes underwent a tandem reaction with salicylaldehydes to provide a series of functionalized 2,5-epoxybenzo[f][1,4]oxazepines in high yields. A novel protocol for the synthesis of 2,5-epoxybenzo[f][1,4]oxazepines is developed. The complicated ring system can be constructed from readily available N-sulfonyl-1,2,3-triazoles and salicylaldehyde derivatives in a one-pot procedure. Many valuable functional groups are well tolerated in this transformation. [Rh2(piv)4] = dirhodium(II) tetrapivalate.
From triazoles to imidazolines through the sequential N-H insertion of α-imino rhodium-carbenes into β-enamino esters/enamine-imine tautomerization/conjugate addition cascade
Jeon, Hyun Ji,Jung, Da Jung,Kim, Ju Hyun,Kim, Youngmee,Bouffard, Jean,Lee, Sang-Gi
, p. 9865 - 9871 (2015/02/19)
A rhodium(II)-catalyzed denitrogenative coupling of N-sulfonyl-1,2,3-triazoles with ambiphilic β-enamino esters affords 2,5-dihydro-1H-imidazoles (3-imidazolines) with broad functional group tolerance. Mechanistic studies using a deuterium-labeled triazol
