Base-Mediated Radical Borylation of Alkyl Sulfones
A practical and direct method was developed for the production of versatile alkyl boronate esters via transition metal-free borylation of primary and secondary alkyl sulfones. The key to the success of the strategy is the use of bis(neopentyl glycolato) diboron (B2neop2), with a stoichiometric amount of base as a promoter. The practicality and industrial potential of this protocol are highlighted by its wide functional group tolerance, the late-stage modification of complex compounds, no need for further transesterification, and operational simplicity. Radical clock, radical trap experiments, and EPR studies were conducted which show that the borylation process involves radical intermediates.
Huang, Mingming,Hu, Jiefeng,Krummenacher, Ivo,Friedrich, Alexandra,Braunschweig, Holger,Westcott, Stephen A.,Radius, Udo,Marder, Todd B.
supporting information
(2021/12/02)
Copper-Catalyzed Electrophilic Thiolation of Organozinc Halides by Using N-Thiophthalimides Leading to Polyfunctional Thioethers
(Hetero)aryl, benzylic, and alkyl zinc halides were thiolated with N-thiophthalimides at 25 °C within 1 h in the presence of 5–10 % Cu(OAc)2?H2O to furnish the corresponding polyfunctionalized thioethers in good yields. This electrop
Gra?l, Simon,Hamze, Clémence,Koller, Thadd?us J.,Knochel, Paul
p. 3752 - 3755
(2019/02/13)
CATALYTIC C-X-BOND METATHESIS THROUGH ARYLATION
The present invention refers to a process for a catalytic aryl transfer to rearrange the backbone of aromatic C-X bonds.
-
Page/Page column 9; 19; 20
(2018/09/28)
Electrochemical synthesis of glycoconjugates of 3β-hydroxy- Δ5-steroids by using non-activated sugars and steroidal thioethers
A new protocol for the electrochemical synthesis of glycoconjugates is presented. Thioether derivatives of cholesterol and other sterols were subjected to anodic oxidation in the presence of a sugar alcohol affording glycoconjugates with the sugar linked to a steroid moiety by an ether bond. The isomeric 6β-3α,5α-cyclo-steroidal thioethers proved to be better sterol donors than the normal 3β-Δ5-steroidal thioethers.
Tomkiel, Aneta M.,Brzezinski, Krzysztof,?otowski, Zenon,Siergiejczyk, Leszek,Wa?ejko, Piotr,Witkowski, Stanis?aw,Kowalski, Jan,P?oszyn?ska, Jolanta,Sobkowiak, Andrzej,Morzycki, Jacek W.
p. 8904 - 8913
(2013/09/23)
More Articles about upstream products of 103325-29-7
Get Best Price for103325-29-7((3S,10R,13R)-10,13-dimethyl-17-((R)-6-methylheptan-2-yl)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl)(phenyl)sulfane