(R)-2-(O-Methyl)benzene-CBS-Oxazoborane_Kain Industrial Additive

Background and overview^[1]

(R)-2-(O-methyl)benzene-CBS-oxazoborane CAS number 865812-10-8, chemical formula 865812-10-8. Molecular weight 353.26400. Density 353.26400, boiling point 473.348ºC at 760 mmHg, flash point 4ºC, refractive index 4ºC. (R)-2-(O-methyl)benzene-CBS-oxazoleborane can be used as a pharmaceutical and chemical synthesis intermediate. If (R)-2-(O-methyl)benzene-CBS-oxazoborane is inhaled, move the patient to fresh air; if skin contact occurs, remove contaminated clothing and rinse thoroughly with soap and water. If you feel discomfort on your skin, seek medical attention; if it comes into contact with your eyes, separate your eyelids, rinse with running water or saline, and seek medical attention immediately; if ingested, rinse your mouth immediately, do not induce vomiting, and seek medical attention immediately. Advice to protect rescuers is as follows: Move the patient to a safe place, consult a doctor, and if conditions permit, please show this chemical safety data sheet to the doctor who comes to the scene. If there is a small leak, collect the leaked liquid in a sealable container as much as possible, absorb it with sand, activated carbon or other inert materials, and transfer it to a safe place. Do not flush it into the sewer; if there is a large leak, build a dike or dig a pit. Contain, seal the drainage pipe, cover it with foam to inhibit evaporation, use an explosion-proof pump to transfer it to a tanker or a special collector, and recycle or transport it to a waste treatment site for disposal.

Structure

Preparation ^[1]

Preparation of (R)-2-(O-methyl)benzene-CBS-oxazoborane: R-diphenyl(pyrrolidin-2-yl)methanol from D-proline according to the following method (6). (R)-diphenyl(pyrrolidin-2-yl)methanol (6) is then treated with the corresponding tri-o-tolylboroxane 7 prepared from boronic acid (refluxed in toluene) to obtain the catalytic precursor (R)- 2-(O-Methyl)benzene-CBS-oxazoborane was stored in toluene under argon.

Main reference materials

[1] (WO2015175994) HIV-1 PROTEASE INHIBITORS AND USES THEREOF