| abstract |
The invention discloses a preparation method of a 1,4,8,11-tetraazacyclotetradecane compound and an intermediate thereof, in particular to an intermediate 1,4,8,11-decahydrotetraaza A method for preparing pyrene compounds, and a method for preparing 1,4,8,11-tetraazacyclotetradecane compounds by using the above-mentioned intermediates. The invention has reasonable route design, low raw material price, high total yield, high product purity, low product purification cost and good economy, and can fully meet the needs of product industrial production. |