Diphosgene → (6Z,16Z)-12-((Z)-dec-4-enyl)docosa-6,16-dien-11-yl 3-(dimethylamino)propyl(methyl)carbamate

HRID 530166

Reaction equation

[CH2:1]([CH:11]([CH2:24][CH2:25][CH2:26]/[CH:27]=[CH:28]\[CH2:29][CH2:30][CH2:31][CH2:32][CH3:33])[CH:12]([OH:23])[CH2:13][CH2:14][CH2:15]/[CH:16]=[CH:17]\[CH2:18][CH2:19][CH2:20][CH2:21][CH3:22])[CH2:2][CH2:3]/[CH:4]=[CH:5]\[CH2:6][CH2:7][CH2:8][CH2:9][CH3:10].O=C(Cl)[O:36][C:37](Cl)(Cl)Cl.[CH3:42][N:43]([CH3:49])[CH2:44][CH2:45][CH2:46][NH:47][CH3:48]>C(OCC)C>[CH3:42][N:43]([CH3:49])[CH2:44][CH2:45][CH2:46][N:47]([CH3:48])[C:37](=[O:36])[O:23][CH:12]([CH:11]([CH2:1][CH2:2][CH2:3]/[CH:4]=[CH:5]\[CH2:6][CH2:7][CH2:8][CH2:9][CH3:10])[CH2:24][CH2:25][CH2:26]/[CH:27]=[CH:28]\[CH2:29][CH2:30][CH2:31][CH2:32][CH3:33])[CH2:13][CH2:14][CH2:15]/[CH:16]=[CH:17]\[CH2:18][CH2:19][CH2:20][CH2:21][CH3:22]

Participants

Conditions

Temperature: -15 °C

Procedure

A solution of (6Z,16Z)-12-((Z)-dec-4-enyl)docosa-6,16-dien-11-ol 8 (0.5 g, 1.1 mmol) in anhydrous diethyl ether (10 mL) was added slowly a solution of diphosgene (0.2 mL, 1.8 mmol) in anhydrous diethyl ether cooled to approximately −15° C. The solution was stirred for 1 hour then N,N,N′-trimethyl-1,3-propanediamine (1.3 mL, 8.7 mmol) was added at −15° C. The solution was warmed to room temperature, stirred for 1 hour, and then filtered to remove the ammonium salts and urea. The diethyl ether filtrate was concentrated in vacuo to dryness. The residue was purified by column chromatography (100% ethyl acetate) to afford (6Z,16Z)-12-((Z)-dec-4-enyl)docosa-6,16-dien-11-yl 3-(dimethylamino)propyl(methyl)carbamate 23 as a colorless oil (0.15 g, 23%), 1H NMR (400 MHz, CDCl3) δ 5.41-5.29 (m, 6H), 4.85-4.77 (m, 1H), 3.35-3.21 (m, 2H), 2.93-2.81 (m, 3H), 2.31-2.17 (m, 8H), 2.08-1.92 (m, 12H), 1.75-1.64 (m, 2H), 1.64-1.15 (m, 31H), 0.92-0.85 (m, 9H). Rf 0.45 (10% MeOH—CH2Cl2).

Workup

temperatureThe solution was warmed to room temperature
stirringstirred for 1 hour
filtrationfiltered
customto remove the ammonium salts and urea
concentrationThe diethyl ether filtrate was concentrated in vacuo to dryness
customThe residue was purified by column chromatography (100% ethyl acetate)

Sources & evidence

ORD record: ord-758afab1823f4443b99a1a546d9317cf
Source dataset: uspto-grants-2016_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09352042B2

Linked notes

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