The present invention is able to provide a bifunctional compound represented by formula (1).

##STR00001##

(In the formula, R.sub.1 represents COOCH.sub.3, COOC.sub.2H.sub.5, COOC.sub.3H.sub.7, COOC.sub.4H.sub.9 or CHO; and R.sub.2 represents H, CH.sub.3 or C.sub.2H.sub.5.)

The present invention is able to provide a bifunctional compound represented by formula (1).

##STR00001##

(In the formula, R.sub.1 represents COOCH.sub.3, COOC.sub.2H.sub.5, COOC.sub.3H.sub.7, COOC.sub.4H.sub.9 or CHO; and R.sub.2 represents H, CH.sub.3 or C.sub.2H.sub.5.)

The present invention is able to provide a bifunctional compound represented by formula (1).

##STR00001##

(In the formula, R.sub.1 represents COOCH.sub.3, COOC.sub.2H.sub.5, COOC.sub.3H.sub.7, COOC.sub.4H.sub.9 or CHO; and R.sub.2 represents H, CH.sub.3 or C.sub.2H.sub.5.)

Disclosed herein are compounds of the general Formula (I), and methods of synthesizing substituted bicyclo[1.1.1 jpentanes. The synthetic methods described herein use a [1.1.1]propellane, a Group VIII transition metal compound, a hydride source and a reagent that can contribute a substituent to form a substituted bicyclo[1.1.1]pentane, such as a compound of the general Formula (I).

Disclosed herein are compounds of the general Formula (I), and methods of synthesizing substituted bicyclo[1.1.1 jpentanes. The synthetic methods described herein use a [1.1.1]propellane, a Group VIII transition metal compound, a hydride source and a reagent that can contribute a substituent to form a substituted bicyclo[1.1.1]pentane, such as a compound of the general Formula (I).

Disclosed herein are compounds of the general Formula (I), and methods of synthesizing substituted bicyclo[1.1.1 jpentanes. The synthetic methods described herein use a [1.1.1]propellane, a Group VIII transition metal compound, a hydride source and a reagent that can contribute a substituent to form a substituted bicyclo[1.1.1]pentane, such as a compound of the general Formula (I).

A cyclic diene-containing composition having a content of a cyclic diene of 99.5 GC area % or less and a content of a cyclic monoene of 3.0 GC area % or less. A method for producing an aldehyde, the method including subjecting a cyclic diene in a cyclic diene-containing composition to a hydroformylation reaction to produce a corresponding aldehyde, wherein the method includes controlling a content of a cyclic monoene contained in the cyclic diene-containing composition to a predetermined threshold (1) or less. A method for producing a cyclic diene-containing composition, the method including performing distillation and purification of a hydrocarbon decomposition product obtained by thermal decomposition of a hydrocarbon-containing composition to produce a cyclic diene-containing composition containing a cyclic diene, wherein the method includes controlling a content of a cyclic monoene contained in the cyclic diene-containing composition to a predetermined threshold (1) or less.

A cyclic diene-containing composition having a content of a cyclic diene of 99.5 GC area % or less and a content of a cyclic monoene of 3.0 GC area % or less. A method for producing an aldehyde, the method including subjecting a cyclic diene in a cyclic diene-containing composition to a hydroformylation reaction to produce a corresponding aldehyde, wherein the method includes controlling a content of a cyclic monoene contained in the cyclic diene-containing composition to a predetermined threshold (1) or less. A method for producing a cyclic diene-containing composition, the method including performing distillation and purification of a hydrocarbon decomposition product obtained by thermal decomposition of a hydrocarbon-containing composition to produce a cyclic diene-containing composition containing a cyclic diene, wherein the method includes controlling a content of a cyclic monoene contained in the cyclic diene-containing composition to a predetermined threshold (1) or less.