5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene and method for producing the same

1. A 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene represented by the following general formula (1):

wherein in the formula (1), R 1 s, R 2 , and R 3 each independently represent one selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 10 carbon atoms, and a fluorine atom, and n represents an integer of 0 to 12.

2. A method for producing a 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene, comprising:

a first step of forming a Mannich base by reacting a carbonyl compound and an amine compound with each other in an acidic solvent, to thereby obtain a reaction liquid comprising the Mannich base in the acidic solvent,

the acidic solvent comprising a formaldehyde derivative and 0.01 mol/L or more of an acid represented by a formula: HX, wherein, in the formula, X represents one selected from the group consisting of F, Cl, Br, I, CH 3 COO, CF 3 COO, CH 3 SO 3 , CF 3 SO 3 , C 6 H 5 SO 3 , CH 3 C 6 H 4 SO 3 , HOSO 3 , and H 2 PO 4 ,

the carbonyl compound being represented by the following general formula (2):

wherein in the formula (2), R 2 and R 3 each independently represent one selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 10 carbon atoms, and a fluorine atom, and n represents an integer of 0 to 12,

the amine compound being represented by the following general formula (3):

wherein in the formula (3), R 4 s each independently represent one selected from the group consisting of linear chain saturated hydrocarbon groups having 1 to 20 carbon atoms, branched chain saturated hydrocarbon groups having 3 to 20 carbon atoms, saturated cyclic hydrocarbon groups having 3 to 20 carbon atoms, and saturated hydrocarbon groups having a hydroxyl group and 1 to 10 carbon atoms, provided that the two R 4 s may be bonded to each other to form a ring selected from the group consisting of a pyrrolidine ring, a piperidine ring, a piperazine ring, and a morpholine ring, and X − represents one selected from the group consisting of F − , Cl − , Br − , I − , CH 3 COO − , CF 3 COO − , CH 3 SO 3 − , CF 3 SO 3 − , C 6 H 5 SO 3 − , CH 3 C 6 H 4 SO 3 − , HOSO 3 − , and H 2 PO 4 − ,

the Mannich base being represented by the following general formula (4):

wherein R 2 , R 3 , and n in the formula (4) have the same meanings as those of R 2 , R 3 , and n in the formula (2), and R 4 s and X − s in the formula (4) have the same meanings as those of R 4 s and X − in the formula (3); and

a second step of reacting the Mannich base and a diene compound with each other by adding an organic solvent, a base in an amount of 1.0 to 20.0 equivalents to the acid, and the diene compound to the reaction liquid, and then heating the reaction liquid, to thereby form a 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene,

the diene compound being represented by the following general formula (5):

wherein in the formula (5), R 1 represents one selected from the group consisting of a hydrogen atom, alkyl groups having 1 to 10 carbon atoms, and a fluorine atom,

the 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene being represented by the following general formula (1):

wherein R 1 s in the formula (1) have the same meaning as that of R 1 in the formula (5), and R 2 , R 3 , and n in the formula (1) have the same meanings as those of R 2 , R 3 , and n in the formula (2).

3. The method for producing a 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene according to claim 2 , wherein the acidic solvent comprises 0.01 to 2.0 mol/L of the acid.

4. The method for producing a 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene according to claim 2 , wherein the base is at least one selected from the group consisting of amines, alkali metal hydroxides, and alkaline earth metal hydroxides.

5. The method for producing a 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene according to claim 2 , wherein the amount of the base added to the reaction liquid is 1.0 to 10.0 equivalents to the acid.

6. The method for producing a 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene according to claim 2 , wherein a heating temperature in the second step is 30 to 180° C.

7. The method for producing a 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene according to claim 2 , wherein the organic solvent added to the reaction liquid is an organic solvent immiscible with a saturated hydrocarbon having 5 to 30 carbon atoms, and

after a reaction, the 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene is liquid-liquid extracted directly from the reaction liquid with the saturated hydrocarbon having 5 to 30 carbon atoms.

8. The method for producing a 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene according to claim 2 , comprising a step in which,

after the 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene is formed in the second step by using an organic solvent miscible with a saturated hydrocarbon having 5 to 30 carbon atoms, the organic solvent miscible with the saturated hydrocarbon having 5 to 30 carbon atoms is removed, and then

while an obtained mixture is used as it is or with water added to the obtained mixture, the 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene is separated by extraction with the saturated hydrocarbon having 5 to 30 carbon atoms.

9. The method for producing a 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene according to claim 7 , further comprising

after the step of separation by extraction, a step of washing, with an aqueous alkali solution and an aqueous acid solution, an extraction liquid which is obtained by separating the 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene by extraction using the saturated hydrocarbon having 5 to 30 carbon atoms, and which comprises the 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene and the saturated hydrocarbon.

10. The method for producing a 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene according to claim 8 , further comprising

after the step of separation by extraction, a step of washing, with an aqueous alkali solution and an aqueous acid solution, an extraction liquid which is obtained by separating the 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene by extraction using the saturated hydrocarbon having 5 to 30 carbon atoms, and which comprises the 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene and the saturated hydrocarbon.