The position of O-alkylation can be varied by suitable choice of reagent. Thus, NaH in DMSO followed by MeI gives predominantly the 2-alkylated product, whereas Li2CO3 in DMF favors 4-alkylation. The latter is a fairly general method for the alkylation of phenols, thiophenols and ß-diketones with pKa less than about 8: Synth. Commun., 18, 1379 (1988)./n
해저드 설명서 (EU): H303-H315-H318-H335
May be harmful if swallowed. Causes skin irritation. Causes serious eye damage. May cause respiratory irritation.
주의 설명서: P261-P280a-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves and eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.