2•(-23•45)

Let's solve the expression step by step:

\[ 2 \cdot (-23 \cdot 45) \]

First, calculate \( -23 \cdot 45 \):

\[ -23 \times 45 = -23 \times (40 + 5) = -23 \times 40 - 23 \times 5 = -920 - 115 = -1035 \]

Now, multiply this result by 2:

\[ 2 \times -1035 = -2070 \]

Final answer: \(\boxed{-2070}\)