67099-40-5Relevant academic research and scientific papers
A highly active diradical cobalt(iii) catalyst for the cycloisomerization of alkynoic acids
Leconte, Nicolas,Du Moulinet D'Hardemare, Amaury,Philouze, Christian,Thomas, Fabrice
supporting information, p. 8241 - 8244 (2018/07/29)
The first cobalt-catalysed cycloisomerisation of alkynoic acids is reported, thanks to the design of a well-defined diradical cobalt(iii) catalyst, in the absence of any additives. The high efficiency, regioselectivity and chemoselectivity are comparable to those of noble metal-based systems. The unique reactivity might be attributed to second coordination sphere effects.
Rapid Access to Thiolactone Derivatives through Radical-Mediated Acyl Thiol-Ene and Acyl Thiol-Yne Cyclization
McCourt, Ruairi O.,Dénès, Fabrice,Sanchez-Sanz, Goar,Scanlan, Eoin M.
, p. 2948 - 2951 (2018/05/28)
A new synthetic approach to thiolactones that employs an efficient acyl thiol-ene (ATE) or acyl thiol-yne (ATY) cyclization to convert unsaturated thiocarboxylic acid derivatives into thiolactones under very mild conditions is described. The high overall yields, fast kinetics, high diastereoselectivity, excellent regiocontrol, and broad substrate scope of these reaction processes render this a very useful approach for diversity-oriented synthesis and drug discovery efforts. A detailed computational rationale is provided for the observed regiocontrol.
STEREOSPECIFIC SYNTHESIS OF CIS-2-ALKENYLCYCLOPROPANE CARBOXYLIC ACIDS; A TOTAL SYNTHESIS OF (+/-)-CIS-CHRYSANTHEMIC ACID
Cameron, Andrew G.,Knight, David W.
, p. 3503 - 3506 (2007/10/02)
A stereospecific route to cis-2,2-dimethyl-3-alkenyl-cyclopropanecarboxylic Acids is illustrated by a total synthesis of (+/-)-cis-Chrysanthemic Acid (11).The key step consists of an alicyclic Claisen rearrangement of O-silyl enolates derived from appropriately substituted (Z)-4-hexen-6-olides .
