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Kibayashi

TL595 M. Naruse, S. Aoyagi, and C. Kibayashi, Tetrahedron Lett. 35, 595... [Pg.325]

I. Kibayashi, M. Ikemi. H. Gomi, Y. Ishimatsu, N. Koizumi, II. Yamada Chem. Abstr. 99, 211138... [Pg.597]

Kibayashi C., Aoyagi S. Nitrogenous Natural Products Synthesis Via N-Acylni-troso Diels-Alder Methodology Synlett 1995 873 879... [Pg.316]

Aoyagi S, Hasegawa Y, Hirashima S, Kibayashi C (1998) Tetrahedron Lett 39 2149... [Pg.269]

Aoyagi, S., Tanaka, R., Naruse, M., Kibayashi, C. (1998) Total Synthesis of (—)-Epibatidine Using an Asymmetric Diels-Alder Reaction with a Chiral N-Acylnitroso DienophUe. Journal of Organic Chemistry, 63, 8397-8406. [Pg.192]

The hetero-Diels-Alder reaction has also utilized dienophiles in which both reactive centers are heteroatoms. Kibayashi reported that the intramolecular hetero-Diels-Alder cycloaddition of chiral acylnitroso compounds, generated in situ from periodate oxidation of the precursor hydroxamic acid, showed a marked enhancement of the trans-selectivity in an aqueous medium compared with the selectivity in nonaqueous conditions (Eq. 12.55).125 The reaction was readily applied to the total synthesis of (—)-pumiliotoxin C (Figure 12.5).126... [Pg.405]

Scheme 12. Kibayashi synthesis of pseudotropine (40) and tropacocaine (43). Reagents i, CCl4-EtOH (3 2), -20°C, 2 weeks ii, H2/Pd-C, MeOH iii, EtOCOCl or PhCH2OCOCl, aq Na2CO3,0°C - RT iv, SOCl2,py, CHC13,0°C - reflux , v, t-BuOK, C6H6-HMPA,0-5°C vi, LiAlH4, THF, reflux vii, (1) H2/Pd-C, MeOH, (2) HC02H, HCHO, reflux. Scheme 12. Kibayashi synthesis of pseudotropine (40) and tropacocaine (43). Reagents i, CCl4-EtOH (3 2), -20°C, 2 weeks ii, H2/Pd-C, MeOH iii, EtOCOCl or PhCH2OCOCl, aq Na2CO3,0°C - RT iv, SOCl2,py, CHC13,0°C - reflux , v, t-BuOK, C6H6-HMPA,0-5°C vi, LiAlH4, THF, reflux vii, (1) H2/Pd-C, MeOH, (2) HC02H, HCHO, reflux.
Backvall et al. (240) have described a method which permits the stereocontrol-led preparation of 3a- and 3/ -hydroxytropane derivatives at will. The approach is related to the Kibayashi synthesis (92,93). [Pg.74]

See other pages where Kibayashi is mentioned: [Pg.27]    [Pg.41]    [Pg.110]    [Pg.271]    [Pg.198]    [Pg.365]    [Pg.381]    [Pg.392]    [Pg.326]    [Pg.581]    [Pg.607]    [Pg.279]    [Pg.279]    [Pg.284]    [Pg.326]    [Pg.344]    [Pg.349]    [Pg.349]    [Pg.350]    [Pg.298]    [Pg.84]    [Pg.84]    [Pg.200]    [Pg.203]    [Pg.203]    [Pg.297]    [Pg.300]    [Pg.57]    [Pg.508]    [Pg.144]    [Pg.373]    [Pg.550]    [Pg.1275]    [Pg.1279]    [Pg.1280]    [Pg.424]    [Pg.424]    [Pg.424]    [Pg.255]    [Pg.1]    [Pg.38]    [Pg.38]   
See also in sourсe #XX -- [ Pg.93 , Pg.205 , Pg.295 ]



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