O Coch 3, a colourless liquid of boiling point 193° C., may be prepared by heating phenol with acetamide.
The same methyl iodide gave with potassium cyanide, acetonitril, which was hydrolysed to acetic acid; this must be C(Coch) a H b H c H d.
[[Coch 3 0ch 3 Nhcoch 3 Nh2 N(Ch3)2 N]](C2H5)2 - 0.260 1.459 1'949 3.821 8.587 8.816 The phenomena attending the salt formation of coloured and colouring substances are important.
Formic acid yields acridine, and the higher homologues give derivatives substituted at the meso carbon atom, N N +[[Hcooh-C 6 H 5 /Inc6h5->C6h4 C6h4 Cho Ch N N +Ch 3 000h->C 6 H 5 /IC 6 H 5 --C 6 H 4 < >C6h4 Coch 3 C]](CH3) Acridine may also 1:e obtained by passing the vapour of phenylortho-toluidine through a red-hot tube (C. Graebe, Ber., 1884, 17, p. 1 37 0); by condensing diphenylamine with chloroform, in presence of aluminium chloride (0.
Glycerin appears to yield, on mild oxidation, an aldehyde, CH20H CH(OH) CHO, and a ketone, CH 2 OH CO CH 2 OH, and these condense as shown in the equation: CH 2 OH CH (OH) CHO + CH 2 OH [[Coch 2 Oh = Ch20h Ch(Oh) Ch(Oh) Ch(Oh) Co.Ch20h+H20]].
Powis Castle, being of red sandstone, is usually called in Welsh Castell Coch (red castle).
With zinc chloride and glacial acetic acid at 145° C. it yields resacetophenone (HO) 2 C 6 H 3 Coch 3 (M.
Potassium permanganate oxidizes it to acetylanthranilic acid, [[Hooc(') C 6 H 4 (2)Nh Coch]] 31 while chromic acid oxidizes it to quinaldic acid (quinoline-a-carboxylic acid).