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HMPT Hexamethylphosphorous

HMPT = hexamethylphosphoric triamide (more correct than hexamethylphosphor-amide HMPA). [Pg.4]

The following abbreviations are used salenH2 = bis(salicylalde-hyde)ethylenediimine, salH = salicylaldehyde, SAB = 2-hydroxy-iV-(2-hydroxybenzylidine)aniline dianion, SAT = 2-(o-hydroxy-phenyDbenzothiazoline dianion, SAP = iV-(2-hydroxyphenyl)salicyl-adldimine dianion, and HMPT = hexamethylphosphoric triamide , and structures marked with an asterisk ( ) are polymeric, usually by in-termolecular association. [Pg.35]

Scheme 6.3. Influence of added TMSCI on the diastereo-selectivity of the conjugate addition of dibutylcuprate to enone 17 (TMS = trimethylsilyl, HMPT = hexamethylphosphoric triamide). Scheme 6.3. Influence of added TMSCI on the diastereo-selectivity of the conjugate addition of dibutylcuprate to enone 17 (TMS = trimethylsilyl, HMPT = hexamethylphosphoric triamide).
The first method gives relatively pure phosphoramidites with most substrates. The second, reversed method is preferred with hindered amines.32 MonoPhos , the dimethyl analogue 24a, is made in a single step from BINOL and HMPT (hexamethylphosphoric triamide) in toluene.33 It... [Pg.277]

HMPA = hexamethylphosphoramide HMPT = hexamethylphosphoric triamide NIPA = nonamethylimidodiphosphoramide L = thioacetamide... [Pg.303]

A novel method for the synthesis of 2-alkylpyridines and 2-pyridine-carbinols starts from pyridine and involves the pyridine Reissert analog 175. Anion formation with sodium hydride and alkylation with alkyl halides afford the 2-alkyl-l-ethoxycarbonyl-2-cyano-1,2-dihydropyridines 176, which on heating with HMPT/Nal (HMPT = hexamethylphosphorous triamide) give 2-alkylpyridines 177. Condensation of the anion with benzaldehyde or o-tolualdehyde leads to 2-pyridinecarbinols (85CI(L)125). The reaction of 1,4-bis(trimethylsilyl)-1,4-dihydropyridine (178) with aldehydes (and ketones) in... [Pg.225]

See other pages where HMPT Hexamethylphosphorous is mentioned: [Pg.101]    [Pg.10]    [Pg.320]    [Pg.7]    [Pg.111]    [Pg.290]    [Pg.123]    [Pg.189]    [Pg.189]    [Pg.266]    [Pg.102]    [Pg.34]    [Pg.182]    [Pg.654]    [Pg.2]    [Pg.1512]    [Pg.10]    [Pg.654]    [Pg.114]    [Pg.50]    [Pg.189]    [Pg.354]    [Pg.412]    [Pg.788]    [Pg.1111]    [Pg.34]    [Pg.288]    [Pg.207]    [Pg.23]    [Pg.1512]    [Pg.273]    [Pg.759]    [Pg.322]    [Pg.328]    [Pg.571]    [Pg.492]    [Pg.168]    [Pg.144]    [Pg.1254]   


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HMPT

HMPT, hexamethylphosphorous triamid

Hexamethylphosphoric

Hexamethylphosphoric triamide HMPT)

Hexamethylphosphorous

Hexamethylphosphorous triamide (HMPT

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