DR ANTHONY MELVIN CRASTO,WorldDrugTracker, helping millions, A 90 % paralysed man in action for you, I am suffering from transverse mylitis and bound to a wheel chair, With death on the horizon, nothing will not stop me except God................DR ANTHONY MELVIN CRASTO Ph.D ( ICT, Mumbai) , INDIA 25Yrs Exp. in the feld of Organic Chemistry,Working for GLENMARK GENERICS at Navi Mumbai, INDIA. Serving chemists around the world. Helping them with websites on Chemistry.Million hits on google, world acclamation from industry, academia, drug authorities for websites, blogs and educational contribution

Thursday, 5 September 2019


(R)-3-Chloro-2-hydroxypropyl-4-methoxybenzoate 10

To a stirred solution of (R)-3-chloro-1,2-propanediol (6.61 g, 59.8 mmol) in CH2Cl2 (120 mL) was added imidazole (4.07 g, 59.8 mmol). After the reaction mixture had cooled to 0 °C, p-methoxybenzoyl chloride (10.2 g, 59.8 mmol) in CH2Cl2 (10 mL) was added dropwise via addition funnel. The resulting solution was allowed to warm to room temperature and stirred until complete consumption of starting material by thin layer chromatography (TLC). The mixture was poured into saturated aq NH4Cl (150 mL), and the aqueous layer was extracted with CH2Cl2 (3 × 100 mL). The combined organic extracts were dried (MgSO4), filtered, and concentrated in vacuo to provide chlorohydrin 10as a clear, viscous oil (11.43 g, 78%) that was used without further purification. Rf 0.3 (20% EtOAc/hexanes); ee >99% as determined by chiral SFC (see the Supporting Information); 

1H NMR (500 MHz, CDCl3) δ 8.07−7.94 (m, 2H), 7.00−6.88 (m, 2H), 4.46 (d, J = 5.1 Hz, 2H), 4.22 (dd, J = 10.6, 5.3 Hz, 1H), 3.88 (s, 3H), 3.78−3.64 (m, 2H), 2.73 (d, J = 5.6 Hz, 1H); 

13C NMR (126 MHz, CDCl3) δ 166.7, 163.9, 132.1, 121.9, 114.0, 70.1, 65.7, 55.7, 46.3; 

IR [CH2Cl2 solution] νmax (cm−1) 3454, 2959, 2889, 1713, 1606, 1512, 1259, 1170, 1104, 1028, 848, 770, 697, 614; 

HRMS (ESI-TOF) calcd for C11H13ClO4 (M)+244.0573, found 244.0501.



  1. Acme Process Systems is a leading Agitator Manufacturer in India, top Agitator Manufacturer in India, Pune, Reactors manufacture India, Process equipment manufacture in India.
    We Supply Reactors, Agitators in Pune, India. get information visit here
    Agitator Manufacture in India
    And get information about Agitator product visit here
    Agitator Manufacture Pune, India

  2. Keep going
    You Can Join Stock market institute in Indore.Get Short-Term Course with 100% Self-Trading Programme for Beginners Enroll Now !