Organic 2 Review Problem 408

Organic 2 Review Problem 408 - 392 P RACTICAL ORGANIC...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
392 PRACTICAL ORGANIC CHEMISTRY If desired, the crude naphthyl ether can be identified as its crystalline picrate (p. 397). (, p. 561). SPECIAL REACTIONS. Methyl iodide and ethyl iodide. Pyridine methiodide and ethiodide. Place 2 drops of dry pyridine in a test-tube, add 2 drops of methyl iodide and mix. A vigorous reaction occurs and on cooling, a colourless crystalline mass of pyridine methiodide, C 6 H 5 N 1 MeI, is formed (cf. p. 377): when recrystallised from methylated spirit, the methiodide has m.p. 117°. The reaction with ethyl iodide is less rapid and it is necessary to warm the mixture gently until cloudy. On cooling, crystals of the ethiodide are formed, and after recrystallisation from methylated spirit have m.p. 84°. Chloroform. i. hocyanide (or carbylamine) reaction. Dissolve i ml. of chloro- form in 2-3 ml. of alcoholic NaOH solution, add a few drops of aniline, mix well and warm gently: the foul odour of isocyanide is produced.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/19/2011 for the course CHM 2211 taught by Professor Castalleano during the Fall '06 term at University of Florida.

Ask a homework question - tutors are online