1983
DOI: 10.3987/r-1983-04-0623
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Preparation and Reactions of 1-Cyanomethyl-2,4,6-trisubstituted Pyridinium Ylids

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Cited by 8 publications
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“…However, more than 40 years after Huisgen pioneered the 1,3-dipolar cycloaddition, no catalytic asymmetric variants have been found for the electronically poor carbon–carbon triple bond dipolarophiles (eq 2). More surprisingly, even racemic 1,3-dipolar cycloadditions of azomethine ylides with alkynes are rather limited with the exception of a few intramolecular versions, which have sporadically been described in past decades. − , Thus, this transformation, in particular, its enantioselective version, has remained a formidable challenge. …”
mentioning
confidence: 99%
“…However, more than 40 years after Huisgen pioneered the 1,3-dipolar cycloaddition, no catalytic asymmetric variants have been found for the electronically poor carbon–carbon triple bond dipolarophiles (eq 2). More surprisingly, even racemic 1,3-dipolar cycloadditions of azomethine ylides with alkynes are rather limited with the exception of a few intramolecular versions, which have sporadically been described in past decades. − , Thus, this transformation, in particular, its enantioselective version, has remained a formidable challenge. …”
mentioning
confidence: 99%