1374152-38-1Relevant academic research and scientific papers
Rhodium-Catalyzed Double Isocyanide Insertion via a Vinylcarbodiimide Intermediate for the Synthesis of 2H-Pyrrol-2-imines
Li, Zongyang,Wang, Yunlong,Zhang, Zhenhua,Zhao, Haiying
, p. 3250 - 3258 (2019)
2 H -Pyrrol-2-imine is an important structural motif exhibiting in biologically active compounds and natural products. An efficient rhodium-catalyzed one-pot reaction of one vinyl azide with sequentially with two different isocyanides is reported, which offers an alternative facile access to 3-amino-5-aryl-2 H -pyrrol-2-imines bearing various substitution on the nitrogens in good yields. An unstable vinylcarbodiimide is the key intermediate in this cascade reaction.
Photoredox-catalyzed synthesis of N-unsubstituted enaminosulfones from vinyl azides and sulfinates
Mulina, Olga M.,Ilovaisky, Alexey I.,Opatz, Till,Terent'ev, Alexander O.
supporting information, (2021/01/11)
A metal-free visible light photoredox-catalyzed synthesis of N-unsubstituted enaminosulfones from vinyl azides and sodium sulfinates in moderate to high yields is described. The reaction proceeds in ethanol and uses eosin Y as a readily available photocatalyst in combination with nitrobenzene as an electron shuttle. Taking into account the number of steps involved (generation of the sulfonyl radical, its addition to the double bond, elimination of molecular nitrogen with formation of an iminyl radical, followed by its reduction and protonation) as well as the number of redox-active reaction partners involved, the selectivity of the process is quite impressive.
Electrosynthesis of N-unsubstituted enaminosulfones from vinyl azides and sodium sulfinates mediated by NH4I
Mulina, Olga M.,Doronin, Mikhail M.,Terent'ev, Alexander O.
supporting information, (2021/10/16)
A wide range of N-unsubstituted enaminosulfones were obtained via electrochemical sulfonylation of vinyl azides with sulfonyl radicals generated from sodium sulfinates. The discovery of N-unsubstituted enaminosulfones synthesis is based on a unique ability of the azido group to eliminate the N2 molecule. The process is performed under constant current conditions in an experimentally convenient undivided electrochemical cell equipped with a graphite anode and a stainless steel cathode applying NH4I both as the redox catalyst and the supporting electrolyte.
A sustainable strategy for the straightforward preparation of 2H-azirines and highly functionalized NH-aziridines from vinyl azides using a single solvent flow-batch approach
Andresini, Michael,Degannaro, Leonardo,Luisi, Renzo
, p. 203 - 209 (2021/02/26)
The reported flow-batch approach enables the easy preparation of 2H-azirines and their stereoselective transformation into highly functionalized NH-aziridines, starting from vinyl azides and organolithium compounds. The protocol has been developed using c
Electrochemically Induced Synthesis of Sulfonylated N-Unsubstituted Enamines from Vinyl Azides and Sulfonyl Hydrazides
Mulina, Olga M.,Zhironkina, Nataliya V.,Paveliev, Stanislav A.,Demchuk, Dmitry V.,Terent'Ev, Alexander O.
supporting information, p. 1818 - 1824 (2020/03/04)
Sulfonylated N-unsubstituted enamines were synthesized through a chain of chemical and electrochemical transformations via sulfonylation of vinyl azides. The disclosing of the N-unsubstituted enamines synthesis was based on a unique property of the azido group, which is its ability to eliminate the N2 molecule. Furthermore, a formal paradox is observed: A double bond reacts and a double bond is retained. Electrosynthesis proceeded in an undivided cell equipped with a graphite anode and a stainless steel cathode; NH4I was used as a supporting electrolyte.
Electrochemical Synthesis of O-Phthalimide Oximes from α-Azido Styrenes via Radical Sequence: Generation, Addition and Recombination of Imide-N-Oxyl and Iminyl Radicals with C?O/N?O Bonds Formation
Paveliev, Stanislav A.,Churakov, Artem I.,Alimkhanova, Liliya S.,Segida, Oleg O.,Nikishin, Gennady I.,Terent'ev, Alexander O.
supporting information, p. 3864 - 3871 (2020/07/30)
Electrochemically induced radical-initiated reaction of vinyl azides with N-hydroxyphthalimide resulting O-phthalimide oximes with challenging for organic chemistry N?O-N fragment has been discovered. The developed approach introduces in synthesis electrochemically generated O-centered imide-N-oxyl radicals as the coupling components. Sequential formation of C?O and N?O bonds was achieved via generation and selective addition of imide-N-oxyl radicals, followed by recombination with iminyl radicals. A wide range of O-phthalimide oximes was obtained with the yields up to 84percent. (Figure presented.).
Zn-ProPhenol Catalyzed Enantioselective Mannich Reaction of 2 H-Azirines with Alkynyl Ketones
Trost, Barry M.,Zhu, Chuanle
supporting information, p. 9683 - 9687 (2020/12/21)
The enantioselective Mannich reaction of 2H-azirines with alkynyl ketones is achieved under Zn-ProPhenol catalysis, delivering various aziridines with vicinal tetrasubstituted stereocenters in high yields with excellent enantioselectivities. The bimetalli
Synthesis of Isoquinoline Derivatives via Palladium-Catalyzed C?H/C?N Bond Activation of N-Acyl Hydrazones with α-Substituted Vinyl Azides
Jiang, Huanfeng,Nie, Biao,Ren, Qingyun,Wu, Wanqing,Zeng, Wei,Zhang, Ji,Zhang, Yingjun
, (2020/02/25)
A palladium-catalyzed cyclization of N-acetyl hydrazones with vinyl azides has been developed. Various substituted isoquinolines, including diverse fused isoquinolines can be prepared via this protocol in moderate to good yields. Mechanistic studies suggest that α-substituted vinyl azide serves as an internal nitrogen source. Also, C?H bond activation and C?N bond cleavage have been realized using hydrazone as directing group. (Figure presented.).
Access to Cycloalkeno[ c]-Fused Pyridines via Pd-Catalyzed C(sp2)-H Activation and Cyclization of N-Acetyl Hydrazones of Acylcycloalkenes with Vinyl Azides
Nie, Biao,Wu, Wanqing,Ren, Qingyun,Wang, Zhongqing,Zhang, Ji,Zhang, Yingjun,Jiang, Huanfeng
, p. 7786 - 7790 (2020/11/02)
A novel Pd(II)-catalyzed vinylic C-H activation and cyclization has been developed, reacting a series of small, medium, and large N-acetyl hydrazones of acylcycloalkenes with vinyl azides to access diverse cycloalkeno[c]-fused pyridine scaffolds. This protocol provides progress in C(sp2)-H bond activation of medium to large cycloalkenes, and the target products can be obtained in a specific regioselectivity with good functional group tolerance and a broad substrate scope.
Indium(iii) catalyzed reactions of vinyl azides and indoles
More, Atul A.,Szpilman, Alex M.
supporting information, p. 3759 - 3764 (2020/06/08)
Indium trichloride catalyzes the reaction of vinyl azides with unfunctionalized indoles to give vinyl indoles. This is the first example of displacement of the azide group by a carbon nucleophile while preserving the vinyl function. The protocol employs very mild reaction conditions and offers excellent yields of diverse 3-vinyl indoles. It is amenable to gram scale. Access to a library of 3,3′-bis(indolyl)methanes through condensation of vinyl azides with 2 equiv of an indole is demonstrated.
