5-Methylthiophene-2-boronic acid

The Boronic acid,B-(5-methyl-2-thienyl)- is an organic compound with the formula C₅H₇BO₂S. The IUPAC name of this chemical is (5-Methylthiophen-2-yl)boronic acid. With the CAS registry number 162607-20-7, it is also named as 5-Methyl-2-thienylboric acid. The product's categories are Azoles; Blocks; Thiophene and Benzothiophene; Boronic acids; Boronic acid; Organoborons; Thiophene; B (Classes of Boron compounds); Boronic acids; Boronic acids and Derivatives; Heteroaryl. Besides, it is white to light yellow powder, which should be stored at 0 - 6°C.

Physical properties about Boronic acid,B-(5-methyl-2-thienyl)- are: (1)ACD/LogP: 1.73; (2)ACD/LogD (pH 5.5): 1.73; (3)ACD/LogD (pH 7.4): 1.71; (4)ACD/BCF (pH 5.5): 12.09; (5)ACD/BCF (pH 7.4): 11.56; (6)ACD/KOC (pH 5.5): 207.22; (7)ACD/KOC (pH 7.4): 198.07; (8)#H bond acceptors: 2; (9)#H bond donors: 2; (10)#Freely Rotating Bonds: 3; (11)Polar Surface Area: 46.7 Å²; (12)Index of Refraction: 1.55; (13)Molar Refractivity: 36.05 cm³; (14)Molar Volume: 113 cm³; (15)Polarizability: 14.29×10^-24 cm³; (16)Surface Tension: 46.2 dyne/cm; (17)Density: 1.25 g/cm³; (18)Flash Point: 137 °C; (19)Enthalpy of Vaporization: 57.35 kJ/mol; (20)Boiling Point: 302.9 °C at 760 mmHg; (21)Vapour Pressure: 0.000425 mmHg at 25 °C.

Uses of Boronic acid,B-(5-methyl-2-thienyl)-: it can be used to produce 2,2-Dimethoxy-5-(5-methyl-thiophen-2-yl)-indan-1,3-dione. This reaction is a kind of Suzuki coupling. It will need reagent Na₂CO₃, catalyst Pd(PPh₃)₄ and solvents Benzene; Ethanol. And this reaction will need heating. The yield is about 47%.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. Keep container tightly closed and in a well-ventilated place. When you are using it, wear suitable protective clothing, gloves and eye/face protection. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)InChI: InChI=1/C5H7BO2S/c1-4-2-3-5(9-4)6(7)8/h2-3,7-8H,1H3
(2)InChIKey: NRIYPIBRPGAWDD-UHFFFAOYAT
(3)Std. InChI: InChI=1S/C5H7BO2S/c1-4-2-3-5(9-4)6(7)8/h2-3,7-8H,1H3
(4)Std. InChIKey: NRIYPIBRPGAWDD-UHFFFAOYSA-N