Triethylamine → HCID 54355511, compound

HRID 275545Notes

Reaction equation

[Br:1]Br.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[C:22]([N:41]1[C:45]([CH2:46][CH2:47][CH2:48]O)=[N:44][CH:43]=[N:42]1)([C:35]1[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1)([C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1)[C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1.C(N(CC)CC)C>ClCCl>[Br:1][CH2:48][CH2:47][CH2:46][C:45]1[N:41]([C:22]([C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)([C:29]2[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=2)[C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[N:42]=[CH:43][N:44]=1

Participants

Conditions

Temperature: -5 °C

Procedure

A solution of bromine (5.6 g) in dichloromethane (15 ml) was added dropwise to a stirred solution of triphenylphosphine (9.2 g) in dichloromethane (100 ml) cooled to -5° C. The mixture was stirred for a further ten minutes at 0° C., then treated portionwise with a solution of the above alcohol (6.9 g) and triethylamine (4.9 ml) in dichloromethane (30 ml) again maintaining the temperature below 0° C. The solution was stirred for a further ten minutes, filtered through a bed of silica, then chromatographed on silica, using dichloromethane-ether (25:1) as eluant, to give 1-bromo-3(1-trityl-1,2,4-triazol-5-yl)propane (3.5 g, m.p. 146°-149° C.). NMR (CDCl3): δ1.8(2H,m), 2.15(2H,t), 3.2(2H,t), 7.1-7.3(15H,m), 7.9(1H,s). 13C NMR was used to confirm the position of the trityl substituent.

Workup

temperatureagain maintaining the temperature below 0° C
stirringThe solution was stirred for a further ten minutes
filtrationfiltered through a bed of silica
customchromatographed on silica

Sources & evidence

ORD record: ord-8a868312ce7b416299d77dad5dfad45d
Source dataset: uspto-grants-1995_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05393732

Reaction notes

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