نتایج جستجو برای: stereoselectively

تعداد نتایج: 274  

Journal: :Chem 2023

Chiral recognition underpins many biological processes, including signaling and enzymatic transformations. Mimicry of the natural systems that include these processes can provide an understanding their fundamental mechanisms enable design synthetic capable achieving similar functions. However, reported hosts only recognize small, simple chiral guests. Here, we report self-assembly a triazatruxe...

Journal: :Beilstein Journal of Organic Chemistry 2013

Journal: :Chemical communications 2013
Paul C Young Nina A Schopf Ai-Lan Lee

Direct allylic etherification of unactivated alcohols occurs regio- and stereoselectively under mild, gold(I)-catalysed conditions.

Journal: :Chemical communications 2008
Yoshihiko Yamamoto Naohiro Kirai Yu Harada

The CuOAc-catalyzed reaction of internal alkynoates with arylboronic acids proceeded under mild conditions to yield trisubstituted cinnamates stereoselectively.

Journal: :Journal of the American Chemical Society 2005
Jordan P Markham Steven T Staben F Dean Toste

The rearrangement of 1-alkynyl cyclobutanols and cyclopropanols to alkylidene cycloalkanones catalyzed by cationic triarylphosphine gold(I) complexes is described. The reaction tolerates terminal alkynes as well as alkyl, aryl, and halo-substitution at the acetylenic position and stereoselectively provides a single olefin isomer. The gold(I)-catalyzed rearrangement is stereospecific with regard...

2013
Xiang-Guo Hu Luke Hunter

The stereoselective incorporation of fluorine atoms into N-heterocycles can lead to dramatic changes in the molecules' physical and chemical properties. These changes can be rationally exploited for the benefit of diverse fields such as medicinal chemistry and organocatalysis. This brief review will examine some of the effects that fluorine substitution can have in N-heterocycles, including cha...

Journal: :Chemical communications 2014
Kenta Tatsumi Tetsuaki Fujihara Jun Terao Yasushi Tsuji

Palladium-catalyzed formal arylacylation of allenes using acid chlorides and arylboronic acids has been achieved. The reaction afforded the corresponding α,β-unsaturated ketones regio- and stereoselectively.

Journal: :Chemical communications 2007
Akihiro Ooguri Zenichi Ikeda Seijiro Matsubara

Treatment of thiol ester with bis(iodozincio)alkane in the presence of palladium catalyst followed by silylation affords Z-silyl enol ether chemo-, regio- and stereoselectively.

2010
Mohit L Deb Pulak J Bhuyan

Some novel annulated pyrido[2,3-d]pyrimidines 6 and 7 were synthesized stereoselectively by intramolecular hetero Diels-Alder reactions involving 1-oxa-1,3-butadienes.

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید