88150-46-3Relevant articles and documents
Modular click chemistry libraries for functional screens using a diazotizing reagent
Meng, Genyi,Guo, Taijie,Ma, Tiancheng,Zhang, Jiong,Shen, Yucheng,Sharpless, Karl Barry,Dong, Jiajia
, p. 86 - 89 (2019/11/13)
Click chemistry is a concept in which modular synthesis is used to rapidly find new molecules with desirable properties1. Copper(i)-catalysed azide–alkyne cycloaddition (CuAAC) triazole annulation and sulfur(vi) fluoride exchange (SuFEx) catalysis are widely regarded as click reactions2–4, providing rapid access to their products in yields approaching 100% while being largely orthogonal to other reactions. However, in the case of CuAAC reactions, the availability of azide reagents is limited owing to their potential toxicity and the risk of explosion involved in their preparation. Here we report another reaction to add to the click reaction family: the formation of azides from primary amines, one of the most abundant functional groups5. The reaction uses just one equivalent of a simple diazotizing species, fluorosulfuryl azide6–11 (FSO2N3), and enables the preparation of over 1,200 azides on 96-well plates in a safe and practical manner. This reliable transformation is a powerful tool for the CuAAC triazole annulation, the most widely used click reaction at present. This method greatly expands the number of accessible azides and 1,2,3-triazoles and, given the ubiquity of the CuAAC reaction, it should find application in organic synthesis, medicinal chemistry, chemical biology and materials science.
Dihydropyridines
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, (2008/06/13)
Dihydropyridine anti-ischaemic agents of the formula: STR1 and their salts where R is aryl or heteroaryl, R1 and R2 are each C1 -C4 alkyl or 2-methoxyethyl, Y is --(CH2)n -- where n is 2, 3, or 4 and is optionally substituted by 1 or 2 CH3 groups, and R3 is an optionally substituted 5- or 6-membered heterocyclic group attached to the adjacent N atom by a C atom, said group R3 being optionally fused to a further heterocyclic group or to a benzene ring.
Long-acting dihydropyridine calcium antagonists. 1. 2-alkoxymethyl derivatives incorporating basic substituents
Arrowsmith,Campbell,Cross,Stubbs,Burges,Gardiner,Blackburn
, p. 1696 - 1702 (2007/10/02)
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