Process for the production of propyl silanes functionalized in 3-position

A process for the production of a 3-functionalized propyl silane comprising:

• adding an allyl compound of formula I
• H2C═CH—CH2X (I),
• wherein X is Cl, Br, I, F, CN, SCN, SH, SR, OH, NRR1 or OR and R and R1, both independently of each other, mean (C1-C6)alkyl or (C3-C7)alkyl,
• to a silanes of formula II
• R2R3R4SiH (II)
• wherein R2, R3, R4, all independently of each other, are hydrogen, halogen, (C1-C6)alkyl, (C1-C6)haloalkyl, (C3-C6)allyl, (C1-C4)alkoxy, phenyl, aryl or aralkyl,
• at a reaction temperature of 0° C. to 200° C. and a pressure of 800 mbar to 25 bar and in the presence of a platinum catalyst,
• wherein the silane (II) is brought into contact with the catalyst in a 3- to 100-fold molar excess in relation to the compound (I) to form an addition reaction.