2000
DOI: 10.1039/b003731l
|View full text |Cite
|
Sign up to set email alerts
|

para-Selective nitration of halogenobenzenes using a nitrogen dioxide–oxygen–zeolite system

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
2
1

Citation Types

0
35
0

Year Published

2003
2003
2016
2016

Publication Types

Select...
7
1

Relationship

3
5

Authors

Journals

citations
Cited by 53 publications
(35 citation statements)
references
References 9 publications
0
35
0
Order By: Relevance
“…In order to gauge the influence of various zeolites, nitration of 2-NT (35 mmol) was carried out using various quantities of both nitric acid and acetic anhydride (Scheme 1) over 2 g of zeolite HY or Hβ at 50 °C for 4 h. These zeolites were chosen because both have large pores (2-NT might have difficulty entering the pores of small or medium pore zeolites) and have shown high regioselectivity in previous nitration studies. [13][14][15][16][17][18][19][20][21][22] The results obtained are recorded in Table. Table 1 shows that no reaction took place when HY zeolite (SiO 2 /Al 2 O 3 = 5.1) was used as a catalyst; the starting material was recovered quantitatively even when a large excess of nitrating reagent was used.…”
Section: Resultsmentioning
confidence: 99%
See 2 more Smart Citations
“…In order to gauge the influence of various zeolites, nitration of 2-NT (35 mmol) was carried out using various quantities of both nitric acid and acetic anhydride (Scheme 1) over 2 g of zeolite HY or Hβ at 50 °C for 4 h. These zeolites were chosen because both have large pores (2-NT might have difficulty entering the pores of small or medium pore zeolites) and have shown high regioselectivity in previous nitration studies. [13][14][15][16][17][18][19][20][21][22] The results obtained are recorded in Table. Table 1 shows that no reaction took place when HY zeolite (SiO 2 /Al 2 O 3 = 5.1) was used as a catalyst; the starting material was recovered quantitatively even when a large excess of nitrating reagent was used.…”
Section: Resultsmentioning
confidence: 99%
“…Despite the increased size of the substrate compared to toluene itself, it was clear that zeolite Hβ remained significantly better than zeolite HY in terms of both activity and selectivity for 2,4-DNT production. [13][14][15][16][17][18][19][20][21][22] Therefore, zeolite Hβ was selected as the catalyst for investigation of the nitration of 4-nitrotoluene (4-NT).…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Therefore, we decided to study nitration using dinitrogen tetroxide and oxygen in the presence of zeolites to see if we could develop a process that would be mild, high-yielding and para-selective. [53,54]. a Hβ (1 g), 5 (10 mmol), 1,2-dichloroethane (30 ml) and N 2 O 4 (ca.…”
Section: Selective Nitration Of Moderately Activated Substratesmentioning
confidence: 99%
“…[5][6][7][8][9][10][11] We have reported the successful use of zeolites in various electrophilic aromatic substitution reactions. [12][13][14] We have shown that the zeolites can be used in greener para-regioselective reactions including nitration, [15][16][17][18][19][20][21] alkylation, 22,23 acylation, 24,25 halogenation 26,27 and methanesulfonylation 28 reactions.…”
Section: Introductionmentioning
confidence: 99%