Bis(neopentyl glycolato)diboron → 4-(4-(3-((tert-Butoxycarbonyl(methyl)amino)methyl)-4-(isopropylsulfonyl)phenylamino)-4-oxobutyl)-3-ethylphenylboronic acid

HRID 735546Notes

Reaction equation

HRID 735546 reaction equation
C(C1C=C(NC(=O)CCCC2C=CC([B:25]([OH:27])[OH:26])=CC=2)C=CC=1S(CC)(=O)=O)#N.Br[C:30]1[CH:35]=[CH:34][C:33]([CH2:36][CH2:37][CH2:38][C:39]([NH:41][C:42]2[CH:43]=[CH:44][C:45]([S:58]([CH:61]([CH3:63])[CH3:62])(=[O:60])=[O:59])=[C:46]([CH:57]=2)[CH2:47][N:48]([CH3:56])[C:49](=[O:55])[O:50][C:51]([CH3:54])([CH3:53])[CH3:52])=[O:40])=[C:32]([CH2:64][CH3:65])[CH:31]=1.CC1(C)COB(B2OCC(C)(C)CO2)OC1>>[C:51]([O:50][C:49]([N:48]([CH2:47][C:46]1[CH:57]=[C:42]([NH:41][C:39](=[O:40])[CH2:38][CH2:37][CH2:36][C:33]2[CH:34]=[CH:35][C:30]([B:25]([OH:27])[OH:26])=[CH:31][C:32]=2[CH2:64][CH3:65])[CH:43]=[CH:44][C:45]=1[S:58]([CH:61]([CH3:63])[CH3:62])(=[O:60])=[O:59])[CH3:56])=[O:55])([CH3:54])([CH3:53])[CH3:52]

Participants

4

Reactant 3

HCID 2734316Bis(neopentyl glycolato)diboronHCID 578426844-(4-(3-Cyano-4-(ethylsulfonyl)phenylamino)-4-oxobutyl)phenylboronic acidHCID 57842767tert-Butyl 5-(4-(4-bromo-2-ethylphenyl)butanamido)-2-(isopropylsulfonyl)benzyl(methyl)carbamate

Product 1

HCID 578428014-(4-(3-((tert-Butoxycarbonyl(methyl)amino)methyl)-4-(isopropylsulfonyl)phenylamino)-4-oxobutyl)-3-ethylphenylboronic acidYield 67%

Procedure

Using a procedure analogous to that described for the preparation of 6D, 21C (0.513 g, 0.86 mmol) was coupled to 5,5,5′,5′-tetramethyl-[2,2′]bi[[1,3,2]dioxaborinanyl] (0.215 g, 0.952 mmol) and hydrolyzed to give boronic acid 21D (0.278 g, 67%). MS (ESI) m/z 561.48 (M+H)+.

Sources & evidence

ORD record
ord-df070f710c7448e380762586cf709e84
Source dataset
uspto-grants-2009_09
Patent number
US07592331B2

Reaction notes

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