The legend of Mulberry
It is said that in the last years of the Western Han Dynasty, the king was in the throne, and Liu Xiu, the Prince of the East Palace, took part in the battle in Nanyang, crusade Wang Xi, and determined to restore the Liu family in the Han Dynasty. However, in the vicinity of Youzhou, it was defeated by General Wang Su’s generals and Su’s sacrifice. When Liu Xiu fled from the battlefield, he left only a solitary person, and suffered a stab wound on his chest and a left leg. Only the poisonous arrow, just when he pulled out the poisonous arrow, wrapped up the wound and wanted to sit down and take a break. Then there came the cry of "grabbing Liu Xiu, don't let Liu Xiu run away." Liu Xiuyi heard, scared and hurriedly hid in a forest not far in front of him. The pursuit of troops passed, and Liu Xiu understood that it was very close to the enemy's camp, he had no horse blade, and he was injured and went out. Will be caught. The best way now is to hide it in a safe place. Thought of this, he endured the pain and walked forward. Walked and found an abandoned brick kilns in front of him. “First hide here.†Liu Xiu thought and looked around and left. The brick kiln was abandoned for many years and was overgrown with weeds. There were broken bricks everywhere. After Liu Xiu walked in, she took a closer look and confirmed that it was safe to find a place to sit down. Maybe he was too tired, maybe it was the arrow poison attack. Liu Xiu once fainted and he fainted. One day, two days, three days... When Liu Xiu opened his eyes again, it was the seventh day after the defeat. Night. At that time, Liu Xiu was weak and hungry and hungry. He slowly moved his limbs and secretly said, “Let's find something to eat. Deng Yu will come to me.†Thought of this, he Endured with pain, he climbed out of the kiln door and climbed toward several trees not far away. When he climbed under the tall tree with a huge canopy, he couldn't climb anymore. He lay on his back and swam his hand on the sweat on his forehead as he panted. gas. At this time, in mid-May, a breeze passed and the ripe fruit of the tree rolled down in twos and threes. Suddenly, a tree fell into Liu Xiukou. Liu Xiu didn't know what he was trying to vomit. However, it was too late. The fruit slowly melted in Liu Xiu's mouth. The sweet and fragrant sensation spread to Liu Xiu's body. Liu Xiu touched it and touched it again. In the mouth ... ... is really a human world. Liu Xiuxi looked out, took care of the whole body pain, looked through the bright moonlight in the grass around, one, two, three ... ... Liu Xiu greedily found, eating, until the distant array The roar of chickens, Liu Xiucai reluctantly climbed back to the kiln. In this way, Liu Xiu took refuge in the kiln during the day and took out some fruits to replenish her hunger in the evening. After about 30 days, Liu Xiu had a good knife wound on his chest, and his arrow's poison disappeared. The body gradually recovered. health. Just when he wanted to go out to find a team, Deng Yu, his general, took him there. After the monarchs met, Liu Xiu said this to the crowd and asked Deng Yu: “What is the name of this tree?†Deng Yu said: "This tree is a mulberry tree. The tree on the left is called the banyan tree. The tree on the right is called the Daqing poplar tree. What you eat is the fruit on the mulberry tree. It is called Mulberry." Liu Xiu nodded. Asked Deng Yu: "What is this place?" Deng Yu replied: "This is the former field village, which belongs to the jurisdiction of Daxing County." Liu Xiu said with emotion: "So it is, Deng General, thinking for the orphans, Once the Han room is restored, Orphaned will be the king of this tree." Ten years later, Liu Xiu actually overthrew Wang Yi and became the emperor, but the matter of closing the tree had long since been forgotten. In one day's dream, there was an old man talking to Liu Xiu. When Liu Xiu woke up, he suddenly remembered what had happened then and ordered the eunuch to carry the decree to seal the mulberry tree in the former field. When the eunuch arrived at the sanglin, he was enthralled by the beauty of the summer mulling, stopping and stopping until the evening, when he realized the imperial decree in his arms, but then he forgot what Liu Xiu described to him. The shape and name of the tree only vaguely remembered that there were three trees. The trunk was straight and the fruit was sweet. When he found the trees, the setting sun had disappeared. At this time, the mulberry fruit had been picked, only the fruit of the banyan tree. The blatantly hung on the branch, and the eunuch did not think about it, but opened the imperial edict against the banyan tree. After reading the imperial decree, the eunuch rushed off and the king's banyan tree danced with joy. The mulberry tree that once used to save was irritated by the intestines. The green young man who had been blinded by his mediocrity was gloated. Shake the huge leaves. This is where the mulberry tree was saved, the eucalyptus tree was sealed off, the mulberry tree broke its breath, and next to it was a silly green young man. Potassium Tert-butoxide CAS No.865-47-4 Potassium tert-butoxide Basic Information
Mol File: 865-47-4.mol
Potassium Tert-butoxide Structure
density 0.910 g/mL at 20 °C
Potassium Tert-butoxide Application
1. Used in pesticides, medicines, printing and dyeing, catalysts, etc. Potassium Tert-Butoxide,Potassium Tert-Butoxide Cas No,Potassium Tert-Butoxide Msds,Potassium Tert Butoxide Formula ShanDong YingLang Chemical Co.,LTD , https://www.sdylhgtrade.com
CAS: 865-47-4
MF: C4H9KO
MW: 112.21
EINECS: 212-740-3
Melting point 256-258 °C (dec.)(lit.)
Boiling point 275°C
2. As a strong base, it is widely used in the condensation, rearrangement and ring opening reactions in organic synthesis such as chemical, pharmaceutical and pesticide.
3. It is a moderately strong base commonly used in organic synthesis.
4. The reason why t-BuOK is widely used is that it is inexpensive and readily available, and its basicity changes depending on the selected reaction solvent.
5. For Stobbe condensation, t-BuOK is a better base than EtONa, with higher reaction yield, shorter reaction time, and no side reactions of ketone or aldehyde reduction.