Aminomethyl Transfer (Mannich) Reactions Between an O‐Triethylsilylated Hemiaminal and Anilines, R
<sub>
<i>n</i>
</sub>
C
<sub>6</sub>
H
<sub>
5−
<i>n</i>
</sub>
NH
<sub>2</sub>
Leading to New Diamines, Triamines, Imines, or 1,3,5‐Triazines Dependent upon Substituent R
作者:Anwar Jacintomoreno、Hemant K. Sharma、Alejandro Metta‐Magaña、Keith H. Pannell
DOI:10.1002/chem.201901877
日期:——
SiOCH2 NMe2 (1) with a variety of anilines (mono-substituted RC6 H4 NH2 , R=H, 4-CN, 4-NO2 , 4-Ph, 4-Me, 4-MeO, 4-Me2 N; di-substituted R2 C6 H3 NH2 , R2 =3,5-(CH3 )2 , 3,5-(CF3 )2 ; tri-substituted R3 C6 H2 NH2 , R3 =3,5-Me2 -4-Br and a "super bulky" aniline (Ar*NH2 ) [Ar*=2,6-bis(diphenylmethyl)-4-tert-butylphenyl]) led to the formation of a range of products dependent upon the substituent. With electron-withdrawing
曼尼希试剂Et3 SiOCH2 NMe2(1)与多种苯胺(单取代RC6 H4 NH2,R = H,4-CN,4-NO2、4-Ph,4-Me,4-MeO,4的反应-Me 2 N;二取代的R 2 C 6 H 3 NH 2,R 2 = 3,5-(CH 3)2,3,5-(CF 3)2;三取代的R 3 C 6 H 2 NH 2,R 3 = 3,5-Me 2 -4- Br和“超大体积”苯胺(Ar * NH2)[Ar * = 2,6-双(二苯基甲基)-4-叔丁基苯基])导致形成一系列取决于取代基的产物。具有吸电子取代基,先前未知的二胺,RC6 H4 NH(CH2 NMe2)[R = CN(2 a),NO2(2b)]和R2 C6 H3 NH(CH2 NMe2)[R2 = 3,5-(CF3 )2(2 c)]。2 a,b,c与1进一步反应生成相应的三胺RC6 H4 N(CH2 NMe2)2(R = CN(3 a),NO2(3b)和R2