Electrochemical syntheses of new arylthiobenzazoles were carried out by electrochemical oxidation of 1-(4-(4-hydroxyphenyl)piperazin-1-yl)ethanone in the presence of 2-mercaptobenzothiazole and 2-mercaptobenzoxazole. Our...
A bifunctional thiourea-catalyzed Michael addition of activated indolin-3-ones to nitroolefins has been developed. The synthetically useful 2,2-disubstituted indolin-3-one derivatives with vicinal chiral quaternary-terti...
Various pyridine, quinoline, isoquinoline, and pyrimidine N-oxides were converted to their corresponding alpha-N-aryltriflamidoheteroarenes in good yield by treatment with N-aryltriflimides, both neat and in solution, at...
The construction of coronenes using simple building blocks is a challenging task. In this work, triphenylene was used as a building block to construct functionalized coronenes, and their solid structures and optoelectron...
An unprecedented method for the construction of optically active 3,3'-disubstituted oxindoles via an organocatalyzed decarboxylative stereoablation reaction has been developed. We describe the first asymmetric reaction b...
We report methods for the synthesis of vertex-differentiated icosahedral closo-boranes. A single B-OH vertex of the icosahedral borane [closo-B-12(OH)(12)](2-) was derivatized to prepare [closo-B-12(OR)(OH)(11)](2-) usin...
A facile ortho-acylation of acetanilides by a Pd-catalyzed oxidative C-H activation was developed in which low toxic, stable, and commercially available toluene derivatives were first used as acylation reagents by a tand...
Addition of thioacetic acid to reactive alpha,beta-unsaturated carbonyl compounds like acrolein or crotonaldehyde in acetone-d(6) generates metastable (E)- and (Z)-1-alkenols, which tautomerize slowly at ambient temperat...
A very simple and efficient stereoselective approach to cis-2,3-disubstituted piperidines via the reduction of N-acyliminium ion intermediates is described. Application of this methodology is exemplified by the enantiose...
A domino cycloisomerization/Pictet-Spengler reaction of 2-(4-aminobut-1-yn-1-yl)aniline with aldehydes has been achieved using a AuIPrCl (5 mol %)/AgSbF6 (10 mol %) catalytic system to produce the corresponding 1-aryl-N-...
5-Bromouracil (U-Br) modified di- and hexanucleotides having U-Br flanked on the 5' or the 3' side by uracil (U) have been synthesized, and their photochemical reactivity was examined under the conditions of irradiation ...
A general and efficient synthesis of indeno[1,2]furans via a Pd-catalyzed bicyclization reaction between 2-alkynyliodobenzenes and propargylic: alcohols is described. The procedure furnishes indeno[1,2]furans with modera...
The reaction of diiminoisoindoline with amine-terminated polyethers results in the formation of phthalocrown macrocycles. For n = 1 (where n is the number of ether units), a 2 + 2 condensation takes place, but for n = 2 ...
2-Methoxymethylpyrrolidine best performed, among several other proline derivatives, to control the enantioselective [3+3] annulation of beta-(hetero)aryl-alpha-nitro-alpha,beta-enals with commercial 2,2-dimethyl-1,3-diox...
A method for trifluoromethylation of alkenes has been developed employing visible light photoredox catalysis with CF3I, Ru(Phen)(3)Cl-2, and DBU. This process works especially well for terminal alkenes to give alkenyl-CF...
Iron trihalides (FeCl3 and FeBr3) smoothly promote the halogenation/rearrangement of 2-indolinone-tethered allenols to efficiently afford 3-halodienyl-oxindoles with good yield and total selectivity. Also, 2-halo-1,3-die...