Zobrazeno 1 - 10
of 196
pro vyhledávání: '"John A. Soderquist"'
Autor:
John A. Soderquist
Publikováno v:
ARKIVOC, Vol 2001, Iss 4, Pp 1-4 (2005)
Externí odkaz:
https://doaj.org/article/2b4b9a31a7364148a6866c20af984fd9
Autor:
Jorge Ramos, John A. Soderquist
Publikováno v:
ARKIVOC, Vol 2001, Iss 4, Pp 43-58 (2001)
Externí odkaz:
https://doaj.org/article/e85147d2be524fedb1bd68933cd25c50
Publikováno v:
ARKIVOC, Vol 2001, Iss 4, Pp 12-19 (2001)
Externí odkaz:
https://doaj.org/article/e023dc8521c14f46b72f425f031c0ce0
Autor:
Eyleen Alicea, Eduvigis González, John A. Soderquist, Bakthan Singaram, George W. Kabalka, Lorell Muñoz-Hernández
Publikováno v:
Organic Letters. 17:4368-4371
Asymmetric hydroboration of 1,3-cyclohexadiene with 4R produces the allylborane 5RR as essentially a single diastereomer (i.e., no observable 5RS), and its addition to representative aldehydes provides 9RS (52-75%) with excellent selectivity (94-99%
Publikováno v:
Organic letters. 19(2)
Available in either enantiomerically pure form through quantitative Grignard procedures from air-stable crystalline complexes (1, 3), the B-γ-TMS propargylic derivatives of the 10-TMS- (2) and 10-phenyl-9-borabicyclo[3.3.2]decanes (4) provide highly
Publikováno v:
Organic Letters. 11:2571-2574
The asymmetric gamma-methoxyallylboration of aldehydes with the configurationally very stable 1 gives nonracemic threo-beta-methoxyhomoallylic alcohols 7 (65-93%) with excellent selectivity (96-99% de, 98-99% ee). The corresponding homoallylic amines
Publikováno v:
Organometallics. 28:2595-2608
1,1-Diorgano-1-stannacyclopent-3-enes have been synthesized by condensation in THF of magnesium complexes of 1,3-dienes and dichlorodiorganostannanes. 1,1-Dimethyl-, 1,1-di-n-butyl-, 1,1-di-tert-butyl-, and 1,1-diphenyl-1-stannacyclopent-3-enes and 1
Autor:
Buddy Soto-Cairoli, John A. Soderquist
Publikováno v:
Organic Letters. 11:401-404
The allylboration of enantiomerically pure N-triisopropylsilyl-alpha-amino aldehydes (2) with B-allyl-10-trimethylsilyl-9-borabicyclo[3.3.2]decanes (1) proceeds cleanly at -78 degrees C, exhibiting essentially complete reagent control. After an oxida
Publikováno v:
Organic Letters. 10:333-336
The disilylation of alpha-amino acids 1 to provide 2 (72-87%) was achieved without racemization. An unprecedented borane-mediated semi-reduction strategy was devised to convert 2 to stable, isolable oxazaborolidines 3 (100%) which were hydrolyzed to
Autor:
José G. Román, John A. Soderquist
Publikováno v:
The Journal of Organic Chemistry. 72:9772-9775
Simple Grignard procedures provide methallylboranes 1a and 1b in enantiomerically pure form from air-stable precursors in 98% and 95% yields, respectively. These reagents add smoothly to aldehydes and methyl ketones, respectively, providing branched