NOVELTY - Quat.-carbon chiral center-containing furan lactone ring compound is synthesized by adding aromatic aldehyde, thiamine hydrochloride (VB1), solvent, and alkali, regulating pH to 9-10, stirring, reacting at 50-70 degrees C, tracing thin layer, balancing reaction, directly adding alpha , beta -unsaturated aldehyde, chiral sec.-amine catalyst, and acid, heating at 80-120 degrees C, continuously stirring, reacting, tracing thin layer, performing primary separation, performing primary purification in resulting product, extracting, reacting with selective hydroxyl oxidant, and performing secondary separation.    USE - Synthesis of quat.-carbon chiral center-containing furan lactone ring compound (claimed).    ADVANTAGE - Process does not control anhydrous condition and require harsh reaction environment and has short reaction time, and product has good chiral selector.    DETAILED DESCRIPTION - Quat.-carbon chiral center-containing furan lactone ring compound of formula (I) is synthesized by adding aromatic aldehyde of formula (III), VB1, solvent, and alkali, regulating pH to 9-10, stirring, reacting at 50-70 degrees C, tracing thin layer, balancing reaction, directly adding alpha , beta -unsaturated aldehyde of formula (II), chiral sec.-amine catalyst, and acid, heating at 80-120 degrees C, continuously stirring, reacting, tracing thin layer, performing primary separation, performing primary purification in resulting product, extracting, reacting with selective hydroxyl oxidant, performing secondary separation, and performing secondary purification in which chiral sec.-amine catalyst is of formulae (IV)-(IX), alkali is triethylamine, potassium carbonate, sodium hydroxide, potassium hydroxide, dimethylaminopyridine (DMAP), or diazabicycloundecene (DBU), preferably sodium hydroxide or potassium hydroxide, acid is acetic acid, benzoic acid, toluenesulfonic acid, phthalic acid iodobenzene, preferably benzoic acid, and selective hydroxyl oxidant is chromium oxidant or manganese dioxide, preferably is pyridinium chlorochromate.    R1=aromatic ring, substituted aromatic ring, or aromatic heterocyclic;    R2=H, alkyl, aromatic ring, or substituted aromatic ring;    R3=trialkyl silicon;    R4-R5=aryl or heterocyclic ring;    R6=alkyl or H atom;    R7=alkyl or heterocyclic ring; and    R8=benzyl or hydrogen.