5 Questions
Less aromatic tha Pers Syntheni's chloride reacts with itself to form 9, 10-di- hydro anthracene which readily looses two proton atton to gield anthracene. By Friedal craft Reaction:- Benzyl jd H CH2-cl Hi ca-CH2 H# Benzyl chloride WIDE + Benzene D1C OO 0 11. The missing word is: ____________
Pers Syntheni's
By Haworth synthesis & -This involves the treatment of benzine with pthalic anhydride in the presence of Aleds to form artho benzyl benzoic aud 11 0 Alcdz 2 HCd phthalic anhydride. The missing word is: ____________
Haworth
Then D-benzylbenzoic acid treated with concitta to give 9, 10- anthraquinone.Now, distillation 1,4- of anthraquinone with zinc dust gields anthraum Alcez H H 9,10-Bihydroanthracene H of zn Shot on Y15 Vivo Al camerard quinone O -24 000 11. The missing word is: ____________
concitta
By of 1,4 produe Anthracen trioxid anthraq Know онн 0 0-methy When Anthrace 11 0. The missing word is: ____________
1,4
0-Benzyl benoic acid canc.+bsay bod dust Anthracene. The missing word is: ____________
0-Benzyl
Study Notes
Synthesis of Anthracene
- Less aromatic than Pers Syntheni's chloride, which reacts with itself to form 9, 10-di-hydro anthracene, readily losing two protons to yield anthracene
Friedal Craft Reaction
- Benzyl chloride (C6H5CH2Cl) reacts with benzene in the presence of AlCl3 to form diphenylmethane (C6H5CH2C6H5)
Haworth Synthesis
- Benzene reacts with phthalic anhydride in the presence of AlCl3 to form ortho-benzylbenzoic acid
- Ortho-benzylbenzoic acid is then treated with conc. HCl to give 9,10-anthraquinone
- Distillation of 9,10-anthraquinone with zinc dust yields anthracene
1,4-Addition Reaction
- Anthraquinone reacts with zinc dust to form 9,10-dihydroanthracene
- 9,10-Dihydroanthracene loses two protons to yield anthracene
Oxidation Reaction
- Anthracene reacts with oxygen to form anthraquinone
- 1,4-Addition of anthracene trioxide yields 9,10-anthraquinone
- 9,10-Anthraquinone is reduced to anthracene in the presence of zinc dust
Test your knowledge on the synthesis of anthracene derivatives using Pers Syntheni's chloride and the reactions involved in forming compounds like 9,10-di-hydro anthracene and anthracene. Questions also cover Friedel-Crafts reaction and Haworth synthesis methods.
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