Table 1 Optimizations for sequential hydrosilylation

From: Iron-catalyzed sequential hydrosilylation

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Entry

Catalyst

Yield of 3a (%)a

Yield of 3a′ (%)

Yield of 3a′′ (%)

1

L1-Fe

–

–

–

2

L2-Fe

–

35

–

3

L3-Fe

44

–

3

4

Fe-1

53

–

–

5

Fe-2

79

–

–

6

Fe-3

84

–

–

7b

Fe-3

96 (90)c

–

–

  1. aReaction conditions: 1a (0.5 mmol), 2a (0.5 mmol), cat. (0.025 mmol), LiOtBu (0.075 mmol), toluene (1 mL).
  2. bUsing 1.2 equiv. of 1a.
  3. cIsolated yield in the parentheses.
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