Citation: Yang Sang, Peng-Fei Yang, Tian-Duo Li. Selective derivatization of oxime-blocked tolylene-2,4-diisocyanate[J]. Chinese Chemical Letters, ;2013, 24(11): 1019-1022. shu

Selective derivatization of oxime-blocked tolylene-2,4-diisocyanate

1.
Shandong Provincial Key Laboratory of Fine Chemicals, Shandong Polytechnic University, Jinan 250353, China

Corresponding author: Tian-Duo Li,
Received Date: 13 May 2013
Available Online: 28 May 2013

A selective reaction of cyclohexanone oxime-blocked tolylene-2,4-diisocyanate (2,4-TDI) with amino siloxane was observed, in which amines were capable of discriminating two reactive groups in the 2,4-TDI molecule. Thus, tolylene-2-tert-butyldimethylsilyloxyethyl carbamide-4-cyclohexanone oxime carbamate was synthesized and its precise structure was determined by single-crystal X-ray diffraction. Moreover, it was found that oxime-blocked isocyanate could react selectively with the-NH₂ group with the-OH group unprotected in ethanolamine.
- Cyclohexanone oxime,
- Tolylene-2,4-diisocyanate,
- Ethanolamine,
- Selective reactions
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沈阳化工大学材料科学与工程学院沈阳 110142