Zobrazeno 1 - 10
of 13
pro vyhledávání: '"35"'
Publikováno v:
Journal of the American Chemical Society. 106:124-130
Quand les complexes de type L n M(CH 3 CO)(RCO)BF 2 sont traites avec KH, ou la tetramethylpiperidine, un proton est elimine du coordinat acetyl pour donner des complexes η 3 -allyl anioniques de type {L n M[η 3 -CH 2 COCO(R)BF 2 ]} − . Etude RX
Publikováno v:
Journal of the American Chemical Society. 120:10350-10358
Commercially available 5-methoxysalicylic acid 16 was converted into the o-quinone monoketal 21, which was attached to the enediyne 22, resulting in 23. After protection of the tert-alcohol 24 and conversion of the ester 25 to aldehyde 28, treatment
Autor:
Alexey Fedorov, Jordan De Jesus Silva, Christophe Copéret, Samantha Grosslight, Matthew S. Sigman, Marco A. B. Ferreira
Publikováno v:
Journal of the American Chemical Society, 141 (27)
High-throughput experimentation and multivariate modeling allow identification of noncovalent interactions (NCIs) in monoaryloxy-pyrrolide Mo imido alkylidene metathesis catalysts prepared in situ as a key driver for high activity in a representative
Publikováno v:
Journal of the American Chemical Society. 130:15185-15192
A general method for copper-catalyzed arylation of sp (2) C-H bonds with p K a's below 35 has been developed. The method employs aryl halide as the coupling partner, lithium alkoxide or K 3PO 4 base, and DMF, DMPU, or mixed DMF/xylenes solvent. A var
Publikováno v:
Journal of the American Chemical Society. 122:2749-2757
The ability of surfactant aggregate−H2O interfaces to control the regioselectivity of Diels−Alder reactions has been investigated. Cycloadditions of surfactant 1,3-dienes 2-[[3-(dimethyldodecylsilyl)-1,3-butadien-2-yl]thio]-N,N,N-trimethyl-1-etha
Publikováno v:
Journal of the American Chemical Society. 121:700-709
Enantioselective total syntheses of aloperine (1), N-methylaloperine (2), and N-allylaloperine (3) are reported. The central element of the synthetic strategy is an intramolecular Diels−Alder reaction in which the cycloaddends are tethered by a N-s
Autor:
M. David Curtis and, Scott H. Druker
Publikováno v:
Journal of the American Chemical Society. 119:1027-1036
The kinetics of the reaction of a series of aromatic and aliphatic thiols with cluster 1 were determined. These reactions form cluster 2 and the arene or alkane corresponding to the thiol: Cp‘2Mo2Co2S3(CO)4 (1) + RSH → Cp‘2Mo2Co2S4(CO)2 (2) + R
Publikováno v:
Journal of the American Chemical Society. 118:9831-9840
Photostimulated additions of tert-butylmercury halides to 1,6-dienes and enynes, including (CH2CHCH2)2X with X = CH2, C(COEt)2, O, or NCH2CHCH2, form the primary alkylmercury halides resulting from 5-exo-cyclizations of the adduct radicals, t-BuCH2CH
Publikováno v:
Journal of the American Chemical Society. 128:15562-15563
Intermolecular arene C-H activation mediated by a divalent nickel species under extremely mild conditions is described. The reactions of either Ni(COD)2 with H[N(o-C6H4PR2)2] (H[R-PNP]; R = iPr, Cy) in benzene at room temperature or [R-PNP]NiCl with
Autor:
Allison L. Choy, Michael T. Crimmins
Publikováno v:
Journal of the American Chemical Society. 119:10237-10238
The intramolecular [2 + 2] enone-alkene photocycloaddition has been established as a powerful reaction in the rapid construction of advanced intermediates for the synthesis of complex natural products.1,2 The diastereocontrol that is available throug