Patent ID: 8318983

Claim:
A protected organoboronic acid represented by formula (X): where R 10 represents an organic group; B represents a boron having sp 3 hybridization; R 20 , R 21 , R 22 , R 23 and R 24 independently are selected from the group consisting of hydrogen and an organic group; and the organic group of R 10 is not selected from the group consisting of —C 2 H 5 —, —C(CH 3 ) 2 CH(CH 3 ) 2 , cyclopentyl, tetrahydropyranyl, norbornyl, 2,4,4-trimethyl-bicyclo[3.1.1]heptanyl, —C 6 H 5 , —C 6 H 4 —CH 3 , —C 6 H 4 —CHO, —C 6 H 4 —OCH 3 , —C 6 H 4 —F, —C 6 H 4 —Cl, —C 6 H 4 —Br, —C 6 H 4 —CF 3 , and —C 6 H 4 —NO 2 .