871355-29-2Relevant academic research and scientific papers
New catalytic cycle for couplings of aldehydes with organochromium reagents
Namba, Kosuke,Kishi, Yoshito
, p. 5031 - 5033 (2004)
(Chemical Equation Presented) A new catalytic cycle has been developed to effect all three subgroups of Cr-mediated couplings, i.e., (1) Ni/Cr-mediated alkenylation, alkynylation, and arylation, (2) Co/Cr-mediated 2-haloallylation, alkylation, and proparg
Process development of halaven: Synthesis of the C14-C35 fragment via iterative nozaki-hiyama-kishi reaction-williamson ether cyclization
Austad, Brian C.,Benayoud, Farid,Calkins, Trevor L.,Campagna, Silvio,Chase, Charles E.,Choi, Hyeong-Wook,Christ, William,Costanzo, Robert,Cutter, James,Endo, Atsushi,Fang, Francis G.,Hu, Yongbo,Lewis, Bryan M.,Lewis, Michael D.,McKenna, Shawn,Noland, Thomas A.,Orr, John D.,Pesant, Marc,Schnaderbeck, Matthew J.,Wilkie, Gordon D.,Abe, Taichi,Asai, Naoki,Asai, Yumi,Kayano, Akio,Kimoto, Yuichi,Komatsu, Yuki,Kubota, Manabu,Kuroda, Hirofumi,Mizuno, Masanori,Nakamura, Taiju,Omae, Takao,Ozeki, Naoki,Suzuki, Taeko,Takigawa, Teiji,Watanabe, Tomohiro,Yoshizawa, Kazuhiro
, p. 327 - 332 (2013/04/10)
Multikilogram manufacturing process of the Halaven C14-C35 fragment is described. The synthesis features convergent assembly of subunits by iterative asymmetric Ni/Cr-mediated coupling executed in fixed equipment. Georg Thieme Verlag Stuttgart - New York.
INTERMEDIATES FOR THE PREPARATION OF HALICHONDRIN B
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Page/Page column 43-45, (2010/02/15)
The present invention provides macrocyclic compounds, synthesis of the same and intermediates thereto. Such compounds, and compositions thereof, are useful for treating or preventing proliferative disorders Formula (F-4).
Fe/Cr- and Co/Cr-mediated catalytic asymmetric 2-haloallylations of aldehydes
Kurosu, Michio,Lin, Mei-Huey,Kishi, Yoshito
, p. 12248 - 12249 (2007/10/03)
The first example to couple aldehydes and 3-bromo-2-halopropenes in a catalytic asymmetric manner is reported. The coupling reaction is effected by the use of a chiral sulfonamide-Cr complex (prepared in situ from 1d, CrBr3, Fe(III) or from Co(II), Et3N, and Mn), TMSCl, and 2,6-lutidine. The method reported here is operationally simple and scalable, furnishing 3-halohomoallylic alcohols with a synthetically useful level of enantiomeric excess. Copyright
