# Thiophene derivative and the polymer thereof and methods for production thereof

The present invention provides a thiophene derivative and the polymer thereof as expressed in the following formulas, which will respond to light and electricity and which are best suited for use as photorecording materials and light-electricity conversion elements. ##STR1## where n and m are independent integral numbers greater than 0; R.sub.1 is a hydrogen atom, a halogen atom or a trialkylsilyl group; the R.sub.2 s together with the ethylenic linkage form a ring and said R.sub.2 s taken together are an optionally substituted alkylene group or --COOCO-- or the R.sub.2 s independently represent cyano; and R.sub.3, R.sub.4 and R.sub.5 are hydrogen or alkyl.

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## Claims

1. A thiophene derivative expressed by the following formula (I): ##STR12## where n and m are independent integral numbers greater than 0; R.sub.1 is hydrogen, halogen or trialkylsilyl; the R.sub.2 s, when taken together with the ethylenic linkage, form a ring and the R.sub.2 s taken together represent an optionally substituted alkylene group or a --COOCO-- group, or each R.sub.2 independently represents a cyano group; and R.sub.3, R.sub.4 and R.sub.5 are independently selected from the group consisting of hydrogen and alkyl.

2. The method for producing a thiophene derivative expressed by the following formula (I): ##STR13## where n and m are independent integral numbers greater than 0; R.sub.1 is hydrogen or trialkylsilyl; the R.sub.2 s, when taken together with the ethylenic linkage, form a ring and the R.sub.2 s taken together represent an optionally substituted alkylene group or a --COOCO-- group, or each R.sub.2 independently represents a cyano group; and R.sub.3, R.sub.4 and R.sub.5 are independently selected from the group consisting of hydrogen and alkyl, comprising the step of:

- allowing an alkene compound expressed by the following formula (II) to react with a thiophene compound expressed by formula (III) below, ##STR14## where n and m are independent integral numbers greater than 0; R.sub.1 is hydrogen atom, halogen or trialkylsilyl; the R.sub.2 s, when taken together with the ethylenic linkage, form a ring and the R.sub.2 s together represent an optionally substituted alkylene group or a --COOCO-- group, or each R.sub.2 independently represents a cyano group; and Z is a halogen atom, ##STR15## where 1 represents any integral number greater than 0; R.sub.1 is hydrogen, halogen or trialkylsilyl; R.sub.3, R.sub.4 and R.sub.5 are independently hydrogen or alkyl; and X is halogen.

3. The method for producing a thiophene derivative according to claim 2, wherein an alkene compound in formula (II) is perfluorocycloalkene which is expressed by the following formula (IV): ##STR16## where k is an integral number ranging from 2 to 4.

4. The method for producing a thiophene derivative according to claim 1, wherein R.sub.1 is a hydrogen atom or a trialkylsilyl group, comprising the step of:

- allowing an alkene compound expressed by the following formula (V) to react with a thiophene compound expressed by formula (VI) below, ##STR17## where p and q are independent integral numbers greater than 0; R.sub.0 is halogen; the R.sub.2 s, when taken together with the ethylenic linkage, form a ring and together the R.sub.2 s represent an optionally substituted alkylene group or a --COOCO-- group, or each R.sub.2 represents cyano; and R.sub.3, R.sub.4 and R.sub.5 are independently selected from the group consisting of hydrogen atom and alkyl, ##STR18## where r represents any integral number greater than 0, R.sub.4 and R.sub.5 are as defined above; Y is selected from the group consisting of --B(OH).sub.2, a trialkyl tin moiety and a halogenated magnesium moiety; and R.sub.1 is hydrogen or a trialkylsilyl.

5. The method for producing a thiophene derivative according to claim 1, wherein R.sub.1 is a halogen atom, comprising the step of converting compounds of formula (I) wherein R.sub.1 is hydrogen or trialkylsilyl to compounds of formula (I) wherein R.sub.1 is halogen.

6. The method for producing a thiophene derivative according to claim 1, wherein R.sub.1 is hydrogen, comprising the step of decomposing by acidification the compounds of formula (I) wherein R.sub.1 is trialkylsilyl.

7. The method for producing a thiophene derivative according to claim 1, wherein R.sub.1 is trialkylsilyl, comprising the step of converting compounds of formula (I) wherein R.sub.1 is a halogen to compounds of formula (I) wherein R.sub.1 is trialkylsilyl.

8. The thiophene derivative expressed by the following formula (VII): ##STR19##

9. The method for producing a thiophene derivative according to claim 8, wherein the thiophene derivative in formula (I) ##STR20## where n and m are independent integral numbers greater than 0; R.sub.2 is hydrogen, halogen or trialkylsilyl; the R.sub.2 s, when taken together with the ethylenic linkage, form a ring and together the R.sub.2 s represent an optionally substituted alkylene group or a --COOCO-- group, or each R.sub.2 independently represents cyano; and R.sub.3, R.sub.4 and R.sub.5 are independently selected from the group consisting of hydrogen and alkyl, is irradiated with ultraviolet rays for photoisomerization.

10. The method for producing a thiophene derivative according to claim 1, wherein the thiophene derivative expressed by the formula (VII) ##STR21## is irradiated with visible light for photoisomerization.

11. A polymer of a thiophene derivative of formula (VIII) or (IX): ##STR22## where n and m are independent integral numbers greater than 0; R.sub.1 is hydrogen, halogen or trialkylsilyl; the R.sub.2 s, when taken together with the ethylenic linkage, form a ring and together the R.sub.2 s represent an optionally substituted alkylene group or a --COOCO-- group, or each R.sub.2 independently represents a cyano group; and R.sub.3, R.sub.4 and R.sub.5 are independently selected from the group consisting of hydrogen and alkyl.

12. The method for producing a polymer of a thiophene derivative according to claim 11, comprising the step of polymerizing electrolytically or through oxidation of a thiophene derivative expressed by the following formula (X) or (XI): ##STR23##

13. The method for producing a thiophene derivative polymer according to claim 11, comprising the step of chemically polymerizing a thiophene derivative expressed in the following formula (XII) or (XIII): ##STR24## where W is halogen.

**Referenced Cited**

**Other references**

- Saika et al., J. Chem. Soc., Chem. Commun., 1994, No. 18, 2123-2124. Tour et al., Macromolecules, 1992, vol. 25, 1901-1907.

**Patent History**

**Patent number**: 5734065

**Type:**Grant

**Filed**: Aug 25, 1995

**Date of Patent**: Mar 31, 1998

**Assignee**: Research Development Corporation of Japan

**Inventor**: Tetsuyuki Saika (Suita)

**Primary Examiner**: Deborah Lambkin

**Law Firm**: Wenderoth, Lind & Ponack

**Application Number**: 8/519,814

**Classifications**

**Current U.S. Class**:

**Additional Hetero Ring Containing (549/59);**Processes Of Preparing A Solid Polymer From A Heterocyclic Chalogen Monomer; Or Compsitions Therefore (522/168); From Silicon-containing Reactant Having At Least One Polyvalent Atom Other Than Carbon, Oxygen, Or Nitrogen (528/30); Heterocyclic Reactant Contains A Ring Composed Solely Of Carbon Atoms And A Single Sulfur Atom (528/380)

**International Classification**: C07D40906; C08F 246; C08G 7722; C08G 7500;