N-(DIPHENYLMETHYLENE)GLYCINE METHYL ESTER

N-(DIPHENYLMETHYLENE)GLYCINE METHYL ESTER Property

Melting point:

42-44?C

Boiling point:

342.8±34.0 °C(Predicted)

Density 

1.05±0.1 g/cm3(Predicted)

storage temp. 

Sealed in dry,2-8°C

pka

2.22±0.50(Predicted)

form 

Solid

color 

White to pale yellow

InChI

InChI=1S/C16H15NO2/c1-19-15(18)12-17-16(13-8-4-2-5-9-13)14-10-6-3-7-11-14/h2-11H,12H2,1H3

InChIKey

PQTOLHHWLUCKSB-UHFFFAOYSA-N

SMILES

C(OC)(=O)C/N=C(/C1=CC=CC=C1)\C1=CC=CC=C1

Safety

HS Code 

2925199590

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H332Harmful if inhaled

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

N-(DIPHENYLMETHYLENE)GLYCINE METHYL ESTER Chemical Properties,Usage,Production

Chemical Properties

Off-White to Pale Yellow Solid

Uses

N-(Diphenylmethylene)glycine Methyl Ester (cas# 81167-39-7) is a compound useful in organic synthesis.

Synthesis Reference(s)

Tetrahedron Letters, 23, p. 2863, 1982 DOI: 10.1016/S0040-4039(00)88434-8

Synthesis

Benzophenone imine (25.00 g, 137 mmol) was added in a single addition to a stirring solution of glycine methyl ester hydrochloride (17.49 g, 139 mmol) in anhydrous dichloromethane (150 mL) under nitrogen atmosphere and at room temperature. The reaction mixture was stirred continuously for 24 h, during which ammonium chloride precipitation was observed to be generated. Upon completion of the reaction, water (20 mL) was added for layering. The organic layer was washed sequentially with saturated sodium carbonate solution (2 x 20 mL) and brine (20 mL). The organic layer was dried over anhydrous sodium sulfate, filtered and concentrated using a rotary evaporator to give about 35 g of a thick light brown slurry (99% purity) in near 100% yield. The product did not require further purification and could be used directly in the subsequent reaction.

References

[1] Bioorganic and Medicinal Chemistry Letters, 2001, vol. 11, # 15, p. 1975 - 1979
[2] Patent: WO2004/5293, 2004, A2. Location in patent: Page 69-70
[3] Patent: WO2006/23630, 2006, A2. Location in patent: Page/Page column 39-40; 65
[4] Chemistry - A European Journal, 2012, vol. 18, # 12, p. 3773 - 3779
[5] Organic Process Research and Development, 2018, vol. 22, # 10, p. 1458 - 1460