Methyl iodide → N,N-Dimethylmorpholinium Hydroxide

To a stirred solution of N-methylmorpholine (10.0 g) in 1,2-dichloroethane (125 mL) at room temperature there was added methyl iodide (14.1 g). The colorless precipitate that formed was filtered and washed sequentially with 1,2-dichloroethane and petroleum ether. The solid was dried in air at room temperature to afford 21.3 g of product. A sample of this product (1.0 g) was dissolved in deionized water (2 mL) and was passed through a column of strongly basic ion-exchange resin (available under the trade designation DOWEX 1X2-100 from Dow Chemical Co., Midland, Mich.) that had been washed sequentially with 10 g of a 10% aqueous solution of NaOH and 200 mL of deionized water. The sample washed from the column with 25 mL of deionized water. The eluted solution was concentrated to dryness using a rotary evaporator and was further dried using a vacuum oven at 50° C. overnight to give the product as a colorless solid.

1. customThe colorless precipitate that formed
2. filtrationwas filtered
3. washwashed sequentially with 1,2-dichloroethane and petroleum ether
4. customThe solid was dried in air at room temperature

ORD-Eintrag

ord-debe3200ea4942899f6e8545691c4c5f

Quelldatensatz

uspto-grants-2009_06

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07541389B2