2-Bromoethanol → 2-(2-Iodo-6-methylpyridin-3-yloxy)ethanol

Temperatur

100 °C

2-Iodo-6-methyl-pyridin-3-ol (6.49 g, 27.6 mmol) was dissolved in an aqueous solution of sodium hydroxide (1M, 30 mL). 2-bromoethanol (3.91 mL, 55.2 mmol) was added dropwise and then the solution was heated to 100° C. for 3 hours. The resulting mixture was extracted with chloroform (2×200 mL) and the combined organic phases then back extracted with aqueous sodium hydroxide solution (1M, 50 mL). The organic phase was dried over magnesium sulfate and the volatiles removed in vacuo to afford the desired product (5.26 g) which was used without further purification.

1. extractionThe resulting mixture was extracted with chloroform (2×200 mL)
2. extractionthe combined organic phases then back extracted with aqueous sodium hydroxide solution (1M, 50 mL)
3. dry with materialThe organic phase was dried over magnesium sulfate
4. customthe volatiles removed in vacuo

ORD-Eintrag

ord-dbf02a3f8f8448e18c63e2fd8cf688b5

Quelldatensatz

uspto-grants-2006_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07141564B2