International Scholarly Research Notices

Research Article

Ferric Hydrogensulfate [ F e ( H S O 𝟒 ) 𝟑 ] As a Reusable Heterogeneous Catalyst for the Synthesis of 5-Substituted-1H-Tetrazoles and Amides

Table 2

Preparation of 5-subsitituted-1H-tetrazoles in the presence of Fe(HSO4)3.
m.p. ∘ C
EntryNitrileFe(HSO4)3  %Time (h)Yield %aProductbFound ReportedLit.
1195850.fig.001101896195850.fig.002215-216215-216 [6]
(95)c
(95)d
(94)e
(94)f
2195850.fig.003101890195850.fig.004123-124122-123 [21]
3195850.fig.005101894195850.fig.006263-264263-264 [6]
4195850.fig.007101892195850.fig.008277-278277-278 [4]
5195850.fig.009153670195850.fig.0010235-236234-236 [5]
6195850.fig.0011102287195850.fig.0012158-159157-158 [22]
7195850.fig.0013102088195850.fig.0014152-153152.5 [22]
8195850.fig.0015102485195850.fig.0016211-212—
9195850.fig.0017101890195850.fig.0018238-239—
10195850.fig.0019103085195850.fig.0020Oilg41-42 [4]
11195850.fig.0021103073195850.fig.002296-9795-96 [22]
(a) Isolated yields. (b) Recrystallized from CH2Cl2-n-hexane. ((c)–(f)) Yields in parentheses refer to reusability of the recovered catalyst in new runs. (g) Purified only with column chromatography using CH2Cl2-n-hexane.