BOC-BETA-CHLORO-ALA-OH synthesis
- Product Name:BOC-BETA-CHLORO-ALA-OH
- CAS Number:71404-98-3
- Molecular formula:C8H14ClNO4
- Molecular Weight:223.65
2731-73-9
130 suppliers
$45.00/100mg
58632-95-4
271 suppliers
$7.00/5g
71404-98-3
55 suppliers
$26.00/250mg
Yield: 35.6%
Reaction Conditions:
with triethylamine in aqueous 1,4-dioxane;water
Steps:
1 Preparation of N-(tert-Butoxycarbonyl)-3-chloro-L-ala-nine
EXAMPLE 1 Preparation of N-(tert-Butoxycarbonyl)-3-chloro-L-ala-nine To a solution of 1.0 g (6.25 mmol) of 3-chloro-L-alanine and 1.3 mL of triethylamine in 50% aqueous 1,4-dioxane were added 1.69 g (6.90 mmol) of 2-(tert-butoxycarbonyloxyimino)-2-phenylacetonitrile with stirring at room temperature. After 2 hours, the reaction mixture was poured into 20 mL of water and extracted twice with ethyl acetate. The organic layer was washed twice with water and then with saturated brine, dried over anhydrous magnesium sulfate and evaporated to give 0.66 g (40.5%) of white solid. Recrystallization from a mixture of ethyl acetate and n-hexane afforded 0.58 g of the pure product (35.6%) melting at 123-124° C., with decomposition, and having the structural formula: STR72 The identity of the product was confirmed by IR and NMR analyses.
References:
University of Florida US4888427, 1989, A
2731-73-9
130 suppliers
$45.00/100mg
24424-99-5
820 suppliers
$13.50/25G
71404-98-3
55 suppliers
$26.00/250mg
3262-72-4
394 suppliers
$10.00/1g
71404-98-3
55 suppliers
$26.00/250mg
59524-02-6
173 suppliers
$5.00/1g
71404-98-3
55 suppliers
$26.00/250mg