ChemicalBook CAS DataBase List 6-METHYLTETRALINE

6-METHYLTETRALINE synthesis

13synthesis methods

Product Name:6-METHYLTETRALINE
CAS Number:1680-51-9
Molecular formula:C11H14
Molecular Weight:146.23

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Yield: 64.8% ， 27.8%

Reaction Conditions:

with aluminum oxide;hydrogen;molybdenum hexacarbonyl in Hexadecane at 400; under 15001.5 Torr; for 2 h;Autoclave;Reagent/catalyst;

Steps:

Catalyst Testing and Product Analysis Procedures
General procedure: Model feedstocks were 10% solutions of substrates(the bicyclic aromatic HCs unsubstituted naphthalene,1- and 2-methylnaphthalenes, and 1,5- and 2,3-dimethylnaphthalenes) in n-hexadecane. A weighedamount of a substrate, as well as a calculated amountof the precursor compounds, was introduced into aninsert tube, while adding oxides or their precursors (inthe case of zirconium oxide) where necessary. Then the insert was placed into a 20-mL steel autoclave. Theexperiments were conducted at 380 and 400° and ahydrogen pressure of 2 and 5 MPa under intense stirring.The molar ratios were as follows: substrate/Mo of18.4 : 1 and 36.8 : 1, substrate/W of 18.4 : 1, substrate/Ti of 2.4 : 1, 4.9 : 1, 7.3 : 1, 9.7 : 1, and 12.5 : 1,substrate/Al of 4.9 : 1 and 9.7 : 1, substrate/Zr of70.2 : 1, substrate/Co of 37.2 : 1, and substrate/Ni of37.2 : 1. The catalysts were sulfided in situ in thehydrocarbon raw materials by adding elemental sulfurin the amount of 2.5 wt % relative to the weight of theraw materials (a solution of a substrate in n-hexadecane).The autoclave was heated to the temperature ofthe experiment at a rate of 10 deg/min. Upon the completionof the experiment, the autoclave was broughtup to room temperature and the catalyst was separatedfrom the conversion products via centrifugation. Noformation of the gaseous products of the conversion ofthe raw materials was observed.

References:

Zakharyan;Onishchenko;Maksimov [Petroleum Chemistry,2018,vol. 58,# 1,p. 22 - 31][Neftekhimiya,2018,vol. 58,# 1,p. 26 - 35,10]