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Syntheses of 7-Substituted Anthra[2,3- B]thiophene Derivatives and Naphtho[2,3- b:6,7- B']dithiophene

Syntheses of 7-Substituted Anthra[2,3- B]thiophene Derivatives and Naphtho[2,3- b:6,7- B']dithiophene

Mustafa A Al-Jumaili, Simon Woodward

J Org Chem. 2018 Sep 21;83(18):11437-11445.

PMID: 30088926

Abstract:

7-R-Anthra[2,3- b]thiophene derivatives (1, R = H, Me, i-Pr, or MeO) are prepared in three steps (in average overall yield >50%) starting from ( E)-4-RC6H4CH2(HOCH2)C═CI(CH2OH). The latter are commercial or readily prepared from 2-butyne-1,4-diol and ArCH2Cl (both costing <1 cent/mmol) at 10 g scales. These allow for the selective formation of (otherwise unattainable) higher solubility 7-derivatives. Similar methods allow for the preparation of naphtho[2,3- b:6,7- b']dithiophene 2 using equally low-cost starting materials.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP217196	Naphtho[1,2-b:5,6-b′]dithiophene		217-19-6	Price

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