Table 1 Catalyst screening of bulk or supported alkali or alkaline earth metal hydrides

From: Fabrication of atomically dispersed barium hydride catalysts for the synthesis of deuterated alkylarenes

Entry

Catalyst

nPhMe/nhydride

Temperature [°C]

Reaction time [h]

D enrichment [%]

1

KH

10

120

6

41

2

CaH2

10

120

6

N.D.

3

NaH

10

120

6

N.D.

4

LiH

10

120

6

N.D.

5

BaH/MgO

100

25

1

93

6

BaH/MgO-bm

100

25

1

83

7

CaH/MgO-bm

25

25

6

60

8

NaH/MgO-bm

25

25

6

77

9

LiH/MgO-bm

10

25

6

30

  1. General catalytic reaction conditions: toluene (43 µL, 0.4 mmol) in 2 mL of cyclohexane. Only H/D exchange at the methyl position has been observed. The deuterium incorporation was determined by quantitative 1H NMR by the decrease of integral intensities methyl positions compared to the raw materials.
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