Sulfuric Acid → Diisopentyl ether

The cock was opened to pass water into the cooling pipe 29, and the flask 30 charged with 600 ml of isoamyl alcohol and 60 g of concentrated sulfuric acid was heated. In a short time, the content of the flask was boiled and a suspended distillate was stored in the flask 31. When the filter medium A was covered with this distillate, the liquid feed pump 32 was operated, whereby a transparent liquid (isoamyl alcohol having a boiling point of 130° C.) was flowed into the reaction flask 30, and the volume of water left in the bottom of the flask 31 was increased. Occasionally, the glass pipe 33 was taken up so that the lower half of the filter medium A located near the top end of the glass pipe 33 was immersed in the surface portion of the distillate. When the reaction was advanced in this state, no fresh distillate was obtained any more in about 5 hours. Accordingly, the heating was stopped, and steam was blown into the reaction flask 30. The obtained distillate was distilled to obtain 275 g of isoamyl ether (having a boiling point of 172° C.).

1. temperaturewas heated
2. temperaturewas increased
3. customno fresh distillate was obtained any more in about 5 hours
4. distillationThe obtained distillate was distilled

ORDレコード

ord-136ded93be6641b1ac13d47835e626fe

出典データセット

uspto-grants-1979_12

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US04177141