- Palladium-catalyzed synthesis of nitriles from N-phthaloyl hydrazones
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The Pd-catalyzed transformation of N-phthaloyl hydrazones into nitriles involving the cleavage of an N-N bond is reported. The use of N-heterocyclic carbene as a ligand is essential for the success of the reaction. N-Phthaloyl hydrazones prepared from aromatic aldehydes or cyclobutanones are applicable to this transformation, which gives aryl or alkenyl nitriles, respectively.
- Ano, Yusuke,Higashino, Masaya,Yamada, Yuki,Chatani, Naoto
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p. 3799 - 3802
(2022/04/07)
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- Metal-Free Direct C?H Cyanation of Alkenes
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A metal-free and direct alkene C?H cyanation is described. Directing groups are not required and the mechanism involves electrophilic activation of the alkene by a cyano iodine(III) species generated in situ from a [bis(trifluoroacetoxy)iodo]arene and tri
- Wang, Xi,Studer, Armido
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supporting information
p. 11792 - 11796
(2018/09/10)
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- PYRAZOLO[1,5-a]PYRIMIDINE DERIVATIVES AS KINASE JAK-2 INHIBITORS
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A compound of the general formula (I), useful for treating myeloproliferative, cancer,or inflammatory diseases, wherein Q represents a six-membered heteroaromatic ring containing 2 N atoms and R1 is hydrogen atom,or Q represents a five-membered heteroaromatic ring containing 1 or 2 heteroatoms selected from the group consisting of N and S,one substituent R1 is attached at C or N atom of said Q ringand R1 is selected from the group consisting of C1-C4-alkyl and C3-C4-cycloalkyl;R2 represents-NR7aR7bor-CH2-NR8aR8b;R3 represents C1-C4-alkyl;R4 represents phenylora 5-or 6-membered heteroarylcontaining 1 or 2 heteroatoms selected from the group consisting of N and S, and R4 is unsubstituted or substituted with 1 or 2 substituents selected from the group consisting of halogen, trifluoromethyl,hydroxyl and C1-C4-alkoxyl;R5 and R6 independently represent hydrogenatom or C1-C4-alkyl,and at least one of R5 and R6 represents hydrogen atom;and other substituents are as defined in the specification; and pharmaceutically acceptable salts thereof.
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Page/Page column 62; 75
(2015/09/22)
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- Highly efficient Rh-catalyzed asymmetric hydrogenation of α,β-unsaturated nitriles
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A highly efficient enantioselective hydrogenation of α,β-unsaturated nitriles catalyzed by Rh-(R,R)-f-spiroPhos complex has been developed. With Rh-(R,R)-f-spiroPhos catalyst and under mild conditions, a wide range of α,β-unsaturated nitriles including the (E)- and (Z)-isomers of 3-alkyl-3-aryl, 3,3-diaryl, and 3,3-dialkyl α,β-unsaturated nitriles were hydrogenated to the corresponding chiral nitriles with excellent enantioselectivities (up to 99.9% ee) and high turnover numbers (TON up to 10,000).
- Yan, Qiaozhi,Kong, Duanyang,Li, Meina,Hou, Guohua,Zi, Guofu
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supporting information
p. 10177 - 10181
(2015/09/01)
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- Bronsted acid mediated nitrogenation of propargylic alcohols: An efficient approach to alkenyl nitriles
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A novel and efficient approach to alkenyl nitriles from readily available propargylic alcohols has been developed. This nitrogenation reaction is transition-metal-free and could be conducted under air at ambient temperature, which makes this protocol promising and practical. Moreover, NH4Br is disclosed as an efficient additive to promote the stereoselectivity of this reaction. the Partner Organisations 2014.
- Huang, Xiaoqiang,Jiao, Ning
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p. 4324 - 4328
(2014/06/23)
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