午夜插插,噜噜噜影院,啪啪伊人网,欧美熟夫,景甜吻戏视频,男人强操性感蕾丝美女视频在线网站,日本美女跳舞视频

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List 2,4-Diaminotoluene
95-80-7

2,4-Diaminotoluene synthesis

13synthesis methods
It is prepared by hydrogenation of 2,4-dinitrotoluene using a nickel catalyst. Commercial samples often contain up to 20% of the 2,6-isomer.
-

Yield:95-80-7 98%

Reaction Conditions:

with formic acid;trifluoroborane diethyl ether

Steps:

4 EXAMPLE 4
EXAMPLE 4 20 parts freshly distilled ether, 1.74 parts (0.01 mole) 2,4-toluene-diisocyanate, 2.8 parts (0.02 mole) boron trifluoride etherate and 1.0 part (0.02 mole) 98% formic acid were combined and reacted as described in Example 1. Neutralization and isolation procedures described in Example 2 followed. 1.19 g (98% yield) 2,4-toluenediamine were recovered, having a melting point of 97° C.-98° C.

References:

Drexel University US5041670, 1991, A

2,4-Diaminotoluene Related Search: