반응 #215257

반응 방정식

2-methyl-11,12-dihydroxy-9,10-ethano-anthracene

lead tetraacetate

→

2-Methyl-9,10-anthracenedicarboxaldehyde

용매

acetic acid

반응 조건

후처리

1. 1
   workup.DISSOLUTIONis dissolved in 45 ml
2. 2
   온도by cooling there
3. 3
   여과are collected by filtration
4. 4
   기타recrystallized from methylene chloride-methanol giving 1.1 g

실험 절차

A mixture of isomers of 2-methyl-11,12-dihydroxy-9,10-ethano-anthracene weighing 2.1 g. is dissolved in 45 ml. of glacial acetic acid and is treated at room temperature with 7.45 g. of lead tetraacetate until a starch-iodide test is positive. After 2-3 hours at room temperature followed by cooling there is deposited orange crystals, which are collected by filtration and recrystallized from methylene chloride-methanol giving 1.1 g. of orange crystals melting at 162°-164° C.

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