1,2-Dichloroethane → HCID 54553173, compound

HRID 565239Notes

Reaction equation

HRID 565239 reaction equation
[CH2:1]([C@H:4]([C@H:8]([OH:10])[CH3:9])[C:5]([OH:7])=O)[C:2]#[CH:3].[O:11]1[CH2:16][CH2:15][CH2:14][CH2:13][CH:12]1[O:17][NH2:18].C(Cl)CCl>ClCCl>[O:11]1[CH2:16][CH2:15][CH2:14][CH2:13][CH:12]1[O:17][NH:18][C:5](=[O:7])[C@H:4]([CH2:1][C:2]#[CH:3])[C@H:8]([OH:10])[CH3:9]

Participants

5

Reactant 3

HCID 111,2-DichloroethaneHCID 5142091O-(Tetrahydropyran-2-yl)hydroxylamineHCID 54154673HCID 54154673, compound

Product 1

HCID 54553173HCID 54553173, compoundYield 37.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Conditions

Temperature
23 °C

Procedure

To a solution of (2R,3R)-2-(2-propyne-1-yl)-3-hydroxybutanoic acid (3.0 g, 21.13 mmol) in dichloromethane (50 mL) is added 2-tetrahydropyranyloxyamine (3.0 g, 25.35 mmol) and EDC (4.5 g, 23.24 mmol). The resulting solution is stirred at 23° C. for 4 h, then diluted with dichloromethane (100 mL) and washed with 1 M hydrochloric acid. The combined organic layers were dried over anhydrous magnesium sulfate and concentrated under reduced pressure to provide (2R,3R)-2-(2-propyne-1-yl)-3-hydroxybutanoic acid 2-tetrahydropyranyloxyamide as a foam (1.9 g, 37% yield). 1H NMR (400 MHz, CDCl3) δ8.82 (bs, 1H), 4.96 (m, 1H), 3.94 (m, 2H), 3.62 (m, 1H), 2.64 (m, 1H), 2.56 (m, 1H), 2.23 (m, 1H), 2.04 (m, 1H), 1.82 (m, 2H), 1.61 (m, 4H), 1.23 (d, 3H) ppm.

Workup

  1. washwashed with 1 M hydrochloric acid
  2. dry with materialThe combined organic layers were dried over anhydrous magnesium sulfate
  3. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-61897aef9ea04e45897a4c45c06d63ea
Source dataset
uspto-grants-2001_01
Patent number
US06172064B2

Reaction notes

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