EDIT: See Miruna's answer instead.

On the workflow side, you could try using the Token Calculator function to replace values; this outputs to a new token so you can use the modified value without having to change it for the entire process.

It's possible the syntax error could be related to the quotation mark not being escaped, and if that is the case it might work if you just use Substitute to add the escape backslash.

SUBSTITUTE(%(Token),"""","\""")

In the example above, there are 4 double quotes total for each because this is how you indicate the double quote inside another double quote.

As a result, this is telling the token calculator to replace " with \" which might be all that is needed to escape the quote and avoid the syntax error.