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1,3,2-Dioxaboroles

Octan 50, 55, 387, 389, 392, 490f 580, 624, 666 aus 2-Octanol und Triathyl-silan 412 aus 2-Tosylhydrazono-octan und Benzo-1,3,2-dioxaborol 370... [Pg.912]

Boron. Five-membered aromatic rings containing a boron atom and two X-type heteroatoms display six jr-electrons and are consequently aromatic. Such systems are 1,3,2-dioxaborole (78) and its benzo derivative (79, Scheme 40).126-129 5,6-Diamino-1,3-... [Pg.19]

Lastly, the condensation of phosphine 56 with phenylboronic acid afforded the salicylic acid-derived compound 57 (Scheme 35).65 Following the same strategy, Gudat et al. recently prepared derivative 59 combining a phosphine group and a benzo 1,3,2-dioxaborol moiety (Scheme 35). 66 Compounds 57 and 59, both obtained in quantitative yields, were characterized by multinuclear NMR spectroscopy, mass spectrometry, and elemental analysis. [Pg.24]

The procedure reported here (parts B and C) has been applied with minor modifications to the syntheses of the cis,cis,cis isomers of the 1,3,2-dioxaborole and perhydro-9b-phenalenol.7 The two other stereoisomers, cis,trans,trans and trans,trans,trans, have been prepared from cis, cis, fran,v-perhydro-9b-phenalenol via the cis and trans isomers of A3a,9b-perhydrophenalene.5 In addition, a few isomers of perhydrophenalenol and of perhydrophenalene and cis, cis, frans,-9b-chloroperhydrophenalene have also been prepared from cis, cis, fraw.s-perhydro-9b-phenalenol.5 Some of the representative transformations are summarized in Scheme 1. (The numbers in parentheses refer to references.)... [Pg.56]

Perhydrophenalene, 61, 103 PERHYDRO-9b-PHEN ALENOL, 61, 103 2-(PERHYDRO-9 b-PHEN ALYL)-1,3,2-DIOXABOROLE, 61, 103 Phase transfer alkylation, 60, 67 Phase transfer oxidation, 60, 13 1 //-Phenalene, 61, 103 Phenalene, 9ba-chloro-... [Pg.82]

Perhydro-9 b-phenalyl)-1,3,2-dioxaborole Phenalene-9b(2//)-boronic acid, decahydro-, cyclic ethylene ester (8) (18604-57-4)... [Pg.145]

The GTP of 2-phenyl-1,3,2-dioxaborole with p-formylstyrene as initiator in the presence of zinc halides as catalyst followed by hydrolysis gave styryl functionalized oligomeric monosaccharides [220]. The reaction sequence is the following (Scheme 69). [Pg.72]

Without additional reagents 1,3,2-Dioxaboroles from acyloins... [Pg.338]

See other pages where 1,3,2-Dioxaboroles is mentioned: [Pg.605]    [Pg.271]    [Pg.271]    [Pg.271]    [Pg.213]    [Pg.11]    [Pg.238]    [Pg.641]    [Pg.605]    [Pg.931]    [Pg.547]    [Pg.142]    [Pg.1022]    [Pg.641]    [Pg.727]    [Pg.605]    [Pg.931]    [Pg.715]    [Pg.7]    [Pg.605]    [Pg.931]    [Pg.109]    [Pg.4]    [Pg.327]    [Pg.438]    [Pg.94]    [Pg.94]    [Pg.102]    [Pg.103]    [Pg.230]    [Pg.534]    [Pg.345]    [Pg.529]    [Pg.33]   
See also in sourсe #XX -- [ Pg.213 ]



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Benzo-l,3,2-dioxaborole

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