The present invention relates to a radioactive iodine-labeled pyrido[1,2-a]benzimidazole derivative compound represented by a definite general formula or a salt thereof, or a radiopharmaceutical comprising the same.

An alkoxysilyl group-containing organic silazane compound having an average composition represented by formula (1) below: ##STR00001##
wherein R.sup.1 is a monovalent hydrocarbon group, R.sup.2 is a divalent hydrocarbon group, Y is a group represented by formula (6) or (7) below: ##STR00002##
wherein R.sup.3, R.sup.4, and R.sup.6 are a monovalent hydrocarbon group, X is an oxygen atom or a divalent hydrocarbon group, p is an integer of 0 to 9, and n is 0, 1, or 2, R.sup.5 is a monovalent hydrocarbon group, m is 0 or 1, r is 0, 1, or 2, and a and b are numbers which satisfy 0<a≤1, 0≤b<1, and a+b=1.

An alkoxysilyl group-containing organic silazane compound having an average composition represented by formula (1) below: ##STR00001##
wherein R.sup.1 is a monovalent hydrocarbon group, R.sup.2 is a divalent hydrocarbon group, Y is a group represented by formula (6) or (7) below: ##STR00002##
wherein R.sup.3, R.sup.4, and R.sup.6 are a monovalent hydrocarbon group, X is an oxygen atom or a divalent hydrocarbon group, p is an integer of 0 to 9, and n is 0, 1, or 2, R.sup.5 is a monovalent hydrocarbon group, m is 0 or 1, r is 0, 1, or 2, and a and b are numbers which satisfy 0<a≤1, 0≤b<1, and a+b=1.

The present invention provides processes for the synthesis of organic azides, intermediates for the production thereof, and compositions related thereto.

The present invention provides processes for the synthesis of organic azides, intermediates for the production thereof, and compositions related thereto.

[Problem] To provide a novel means capable of generating highly stereoselective and/or highly efficient amidation reactions in a variety of substrates having a carboxyl group and an amino group, and capable of producing amide compounds.

[Solution] A reaction agent for amide reactions between carboxyl groups and amino groups and including a silane compound indicated by general formula (A) and/or general formula (B).

##STR00001##

(In general formulas (A) and (B), each substituent represents the definition described in the Claims.)

[Problem] To provide a novel means capable of generating highly stereoselective and/or highly efficient amidation reactions in a variety of substrates having a carboxyl group and an amino group, and capable of producing amide compounds.

[Solution] A reaction agent for amide reactions between carboxyl groups and amino groups and including a silane compound indicated by general formula (A) and/or general formula (B).

##STR00001##

(In general formulas (A) and (B), each substituent represents the definition described in the Claims.)

Provided is a surface treatment agent including an alkoxysilane compound having a cyclic silazane structure represented by the following general formula (1): ##STR00001##
wherein R.sup.1 represents an unsubstituted linear alkyl group having 6 to 20 carbon atoms, R.sup.2 represents a substituted or unsubstituted alkylene group having 3 to 6 carbon atoms that may include a heteroatom, R.sup.3 and R.sup.4 each independently represent a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and n represents an integer of 0 or 1.

Provided is a surface treatment agent including an alkoxysilane compound having a cyclic silazane structure represented by the following general formula (1): ##STR00001##
wherein R.sup.1 represents an unsubstituted linear alkyl group having 6 to 20 carbon atoms, R.sup.2 represents a substituted or unsubstituted alkylene group having 3 to 6 carbon atoms that may include a heteroatom, R.sup.3 and R.sup.4 each independently represent a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and n represents an integer of 0 or 1.

Described herein are compositions and methods for forming silicon and oxygen containing films. In one aspect, the film is deposited from at least one precursor, wherein the at least one precursor selected from the group consisting of Formula C: ##STR00001##
as defined herein.