91427-06-4Relevant articles and documents
Redox-Neutral Photocatalytic Cyclopropanation via Radical/Polar Crossover
Phelan, James P.,Lang, Simon B.,Compton, Jordan S.,Kelly, Christopher B.,Dykstra, Ryan,Gutierrez, Osvaldo,Molander, Gary A.
supporting information, p. 8037 - 8047 (2018/07/03)
A benchtop stable, bifunctional reagent for the redox-neutral cyclopropanation of olefins has been developed. Triethylammonium bis(catecholato)iodomethylsilicate can be readily prepared on multigram scale. Using this reagent in combination with an organic photocatalyst and visible light, cyclopropanation of an array of olefins, including trifluoromethyl- and pinacolatoboryl-substituted alkenes, can be accomplished in a matter of hours. The reaction is highly tolerant of traditionally reactive functional groups (carboxylic acids, basic heterocycles, alkyl halides, etc.) and permits the chemoselective cyclopropanation of polyolefinated compounds. Mechanistic interrogation revealed that the reaction proceeds via a rapid anionic 3-exo-tet ring closure, a pathway consistent with experimental and computational data.
PROCESS FOR PREPARING BENZOFURAN DERIVATIVES SUBSTITUTED AT POSITION 5
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Paragraph 0151-0155, (2013/07/05)
The disclosure relates to a process for preparing benzofuran derivatives of general formula I: in which R, R1, and R2 are as defined in the disclosure; by coupling the hydroxylamine with a diketone of general formula III: in order to form an oxime that is then cyclized by heating in order to form the desired compound.
One-pot synthesis of carbamoyl azides directly from primary alcohols and oxidation of secondary alcohols to ketones using iodobenzene dichloride in combination with sodium azide
Li, Xiao-Qiang,Wang, Wei-Kun,Zhang, Chi
scheme or table, p. 2342 - 2350 (2009/12/27)
An effective synthesis of carbamoyl azides directly from primary alcohols using iodobenzene dichloride in combination with sodium azide has been developed. Moreover, the same regent combination was also efficient for the oxidation of secondary alcohols to the corresponding ketones.
3-Azabicyclo[3.1.0]hexane derivatives useful in therapy
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, (2008/06/13)
Compounds of formula I, where the substituents are as defined herein, and the pharmaceutically or veterinarily acceptable derivatives or prodrugs thereof, are pharmaceutically and veterinarily useful, in particular they bind to opiate receptors (e.g. mu,
B-alkyl suzuki-miyaura cross-coupling reactions with air-stable potassium alkyltrifluoroborates
Molander, Gary A.,Yun, Chang-Soo,Ribagorda, Maria,Biolatto, Betina
, p. 5534 - 5539 (2007/10/03)
The palladium-catalyzed cross-coupling reaction of substituted potassium alkyltrifluoroborates with aryl halides and aryl triflates proceeds readily with moderate to good yields. The potassium alkyltrifluoroborates 1, 2, and 3a-e were easily synthesized and obtained as air-stable crystalline solids that can be stored for long periods of time. All of the cross-couplings proceed under the same reaction conditions using PdCl2(dppf)·CH2cl2 as catalyst in THF-H2O in the presence of 3 equiv of Cs2CO3 as base.