Incorrect Syntax Near The Keyword 'EXEC' (Dynamic Sql Statement Error)

Following is the stored procedure iam trying to create.Here i am trying to

First create a table with the table name passed as parameter
Second I am executing a dynamic sql statement ("SELECT @sql= 'Select * from table") that returns some rows.
Third I want to save the rows returned by the dynamic sql statement ("SELECT @sql= 'Select * from table") in the tablei created above.All the columns and datatypes are matching.

This table would be further used with cursor.
Now i am getting a syntax error on the last line.Though i doubt whether the last 3 lines will execute properly.Infact how to execute a sp_executesql procedure in another dynamic sql statement.ANy suggestions will be appreciated.


CREATE PROCEDURE [dbo].[sp_try]

@TempTable varchar(25)


AS

DECLARE @SQL nvarchar(MAX)

DECLARE @SQLINSERT nvarchar(MAX)



BEGIN


--create temp table

SELECT @Sql= N'CREATE TABLE ' + QUOTENAME(@TempTable) +

'(

ContactName varchar (40) NOT NULL ,

ContactId varchar (30) NOT NULL ,

ContactrMessage varchar (100) NOT NULL,



)'

EXEC sp_executesql @Sql, N'@TempTable varchar(25)', @TempTable = @TempTable


SELECT @sql= 'Select * from table'




SELECT @sqlinsert = 'INSERT INTO ' + quotename( @TempTable )

SELECT @sqlinsert = @sqlinsert + EXEC sp_executesql @sql, N'@Condition varchar(max)', @Condition=@Condition

EXEC sp_executesql @SQLINSERT, N'@TempTable varchar(25)', @TempTable = @TempTable